It's very good of you to help her in that round about way. That is a very tough position for her to be in. Plus that way she won't feel prideful and try to turn down the extra help, if she's that kind of lady. You can just tell her you did research and that's what they are worth.
I am able to get LTCI through my employer, as well as some pretty awesome life insurance. My dad can also get LTCI through my employer, just by way of being my relative. I haven't signed up yet, being young and in good health. As I approach 40 years old though, I'll be signing up. My dad is slowly looking at it, and I am actively prodding him to get him signed up. He is only 67, but takes poor care of himself.
He isn't gone, and that is a gift in itself. You said he has been a stand in dad to you, and I can say I understand what is going through your head right now, at least to some degree. My mom deteriorate in a few short months, and very rapidly over a few short weeks a few years ago. Losing a parent, be they a stand in, step, or a biological one is not easy. I find the things I value in my home most are not particularly valuable dollar wise, but they bring back so many fond memories of loved ones, it's a little hard to take sometimes. My Remington Nylon 66 brings back all kinds of laughter when I think of my grandpa.
Knowing you are a gun, and revolver enthusiast, I have to say you have the best kind of inheritance right there. I really do hope he pulls out of this, but we all go eventually. When that happens, you will pay tribute to the man every time you shoot those Smiths.
This is undoubtedly very difficult for you and yours. I wish all of you strength and calm.
And just to make sure I keep it more gun related and on topic for THR, good lord man, I keep looking at that picture and just drooling. Those are seriously beautiful guns. I mean that's like a dream addition to any S&W enthusiast's collection.