Welcome! Most of these gals travel alone. However, they get together with others on this forum for GTG's or to travel together for awhile. RVers are very friendly people and you can make friends just about anywhere you go/stay. You are only as "alone" as you want to be.
Safety doesn't seem to be a real issue as long as you use common sense and trust your instincts when stopping somewhere. If something doesn't feel right or someone near you doesn't seem right, move on.
As far as boondocking, some of the gals on here have put solar panels on their rigs, so you have that option if you want a larger RV. Sounds like you are familiar with the RT and know what you want tho. Everyone on here has something different and has different reasons for their choices. We don't judge
There are a few RT fulltimers on here I believe.
Good luck with your search and new adventures coming up! We love to hear about and share in each others adventures on here (especially love photos!).