I’m mentoring a new shooter & she is concerned about getting a gun due to storage issues with a ten year old in the house. Here are my ideas:
What ideas do you have?
How about NRA program like Eddie Eagle?
http://www.eddieeagle.com/#/
Perhaps mom is interested in getting the 10 year old involved in Appleseed project? (My sister had my nephew/niece involved when they were young and they were very interested and learned to shoot properly) -
https://appleseedinfo.org/smf/index.php?board=275.0
For me, when my son and daughter were young (I think around 6?), I introduced them to the world of guns and reloading as they were always curious about me reloading and shooting.
I started them sorting cleaned brass by caliber (I would mix up various calibers with 380Auto and 9mm being a particular "game").
When it got to gun safety, we always kept a gun safe but I had them sit at the table and watch as I disassembled my Glocks, M&Ps and 1911, etc. (Yes, they WERE curious) Then I had them disassemble, clean and reassemble each gun over and over and over and over ... as they grew less and less curious.
I taught them it really wasn't the guns that were dangerous rather bullets in the guns that made them dangerous.
After a while, they not only knew how to disassemble and assemble all the pistols, they also got sick of handling them - Gun curiosity taken care of.
I also taught them to treat guns as though they had active lasers coming out of the muzzle all the time - Don't point at anything you don't want destroyed, even if they knew the gun was empty. Now in their 20s, they are pretty good shooters and safe shooters (I don't have to worry about them as guns are always pointed in safe direction and fingers off the trigger) ... And I don't have to worry about them knowing how to disassemble and clean the guns as they could do it with their eyes closed.
I am not sure if this will help the OP but this is what I did with my kids and we never had any issues with them wanting to play with guns at home or accidental discharge.
Now, their adult friends wanting to go shooting with us who did not grow up with guns? That's a whole different story and I will take every one of them shooting so they too can learn to handle and shoot guns safely.