Tim ~
Welcome to THR.
I hope you find lots of good information here and have a pleasant time doing it.
As newer shooters, you and your fiancee both have a lot you need to learn. That's okay -- learning is a big part of the fun of firearms. Depending on your interests, you could learn about history (not just
military history, either; the history of arms is the history of human scientific achievement). You could learn about cowboys, about physics, about ballistics, about Olympic-level competitions, about -- oh, about any number of things tangentally related to firearms. And you could learn about firearms themselves, how they are put together, how they are used, and so on. It's a big world and there's lots to learn.
In the meanwhile, the first question to ask yourself is,
"Why are we looking for a firearm?" What do you want that firearm to
do? Are you & your fiancee interested in target shooting? Competition? Self-defense? Collecting?
The next question to ask is,
"How much are we willing to spend?" If you are looking specifically for concealable defensive handguns, you can realistically expect to spend a minimum of $400 for a decent semi-automatic (slightly less if you go with a used revolver), plus another $200 should be budgeted for accessories such as a solid belt and a holster, those pink ear muffs, good eyewear, spare magazines or speedloaders, and so on. If you are not interested in carrying the gun, you can scratch holster & belt off the accessories list, but you will still need the other items. For target shooting, you will need eye protection, ear protection, and at least one magazine or speedloader. The targets themselves and ammunition will be an ongoing expense -- and no matter which caliber gun you choose, the cost of ammunition will soon rival the cost of the gun itself. It is absolutely worthwhile to factor the cost of ammunition in when you consider which gun to buy, if money is at all tight.
With these two basic questions answered, the next big watershed question is,
"Semi-automatic or Revolver?" You will find huge proponents of both firearms types on this site and everywhere else on the web too. I really recommend that you read as much about this choice as possible, both here and elsewhere. As you evaluate the arguments, you'll have a chance to ask yourselves what kind of gun owners you intend to be -- are you going to practice regularly? Are you committed to learning how to shoot well and run the gun safely and efficiently? There is no gun out there which does not require some level of practice and knowledge in order to use safely, but some guns are more complex than others.
The next big watershed question is,
"Which caliber do I want?" As hinted above, this can be a budget question because ammunition does cost money. As new shooters, it is absolutely important that you are willing to burn lots of ammunition up in order to learn to shoot safely and well. If you are reluctant to shoot because of the cost, you only hurt yourself. So take that cost into account. If you are looking for a defense gun, do a little research about the phrase "stopping power." Do not just read one source on this one because ... well, because it's a hot button issue and a lot of the folks arguing about calibers online do have issues. So do some research and be aware that you'll have to make up your own mind about what is important to you.
Another question to explore:
"How much ammunition should my gun carry?" Again, personal choice. Research it.
If you are going with a semi-automatic firearm, another question you might ask is,
"Do I want or need an external, manually operated safety on my firearm?" Again, there are pros and cons to both sides of that argument, plenty of heated opinions everywhere, and more research for you to do.
And you can ask,
"What kind of trigger pull do I prefer: DAO, DA/SA, SA?" If you can get your hands on the guns in a gun store, often the shopkeepers will allow you to dryfire, pulling the trigger without any ammunition in the gun. This lets you check how different triggers feel to you.
Closely related to this is the question,
"Am I willing to practice and master the task of learning two separate trigger pulls on a DA/SA semi-auto?" Nothing wrong with a DA/SA gun but if you choose one you should be aware that some folks have a difficult time mastering the transition between the first (heavy) pull and the subsequent (light) pulls.
Finally we get down to questions about gun size, weight, and aesthetics. These are again very personal questions, especially for a defensive handgun. Whatever you get should really fit your hand (see
www.corneredcat.com/FirstGun/tryongun.aspx for more about that). How heavy or light it is depends somewhat on your personal tolerance for recoil, how (or whether) you'll be carrying the gun, and what other features you are willing to trade away in order to get a gun the size and weight of the one you want.
As you can see, there are just a lot of variables to consider and some of the variables are very personal.
Please let your fiancee know that an important part of the whole learn-to-shoot process is choosing her own gun. You can't do it for her because she needs the education she will get along the way. You can't even just narrow it down to three similar choices and let her eeny-meeny-miny-moe between those choices, because she needs that education if she is serious about learning to shoot and learning to defend herself. You cannot and should not narrow it down for her, or simply let her jump right past the major decision points, because the major branching choices (semi or revolver? DAO, DA, SA, striker fired? manual safety or no? polymer or metal? caliber choice?) each represent important learning points. Facing each fork in the road always brings up related opportunities for personal reflection, too -- which is very important for her own personal journey into responsible self defense.
For example, the choice between semi-auto and revolver often also prompts the beginner to consider whether she is serious about learning more, or whether she just wants a gun she can toss in a drawer somewhere. That's one small but important bit of self-knowledge which is prompted by this first major choice. The other major choices all represent similar opportunities for personal reflection, reflection that is necessary if her initial wish to defend herself is to grow into that rare and necessary hard knot of resolve to do whatever it takes.
Your role should be to find good resources for more information, to suggest variants she might try and to steer her away from dangerously bad choices, but you shouldn't be guiding her toward any particular choice. Help her educate herself in all the trade-offs that are involved, while leaving her entirely free to make her own decisions, and you'll both be happier with the final result.
Finally, as Springmom said, someone really can't pick out a specific gun for another person for the same reason you can't buy someone else a specific pair of shoes: measuring the fit. She has to try the guns on herself to see if they fit her hands. You can't do that for her without her involvement because you cannot climb inside her skin and feel what she feels when she holds the gun, just as you literally cannot step into her shoes to see if they fit her feet.
So before you guys get down to individual guns, back up a bit and talk over the major questions outlined above. Do a little research.
Then come back here and ask more questions. We'll be glad to help you out!
pax