Rhonda,
I am a single woman and traveled 2 months last year from the east coast to the west coast 7000 miles. I never really felt unsafe in my class A, which is why I bought it. Everyone thinks a man is driving you around anyway. You can even wear a hat and make them think you are a man!
Mine has leveling jacks, and I don't really use them unless I'm stopping for a few days, so I don't have to get out for that. Most campgrounds are pretty level on concrete. I do have dogs with me and a few times, I was scared walking them at night. But, I recommend having a dog with you. I think a lot of things are probably more fun with another person, but since I haven't found a person I want, I am content traveling alone. There are usually a lot of nice camping people around but it does attract some older codgers who dog us young "over the hill kids"
but I just learned to ignore them and their 200 grand coaches. Mostly what I found to be a pain was that once on the road, having to get up to get something or turn off something you forgot is a major pain. It's not easy to pull a rig over and it takes extra gas to pull over, get "whatever" and get moving again. That would be easier done with a helper. And I did breakdown and had to be towed, so keep that in mind...always have a service to help you. (not AAA, but an RV service policy)
I will tell you that I camped everywhere, at walmarts, rest stops, empty parking lots and at truck stops. A few times I had to move to feel safer but I never had to get out to do it, so I would stick with a motorhome as a single. When someone knocked on my door, I opened the window, just like home and took it from there. The major thing about a motorhome is that people let them sit(and ruin). I drive mine every two weeks at least 40 miles. I never let it sit for long. I take it on a trip to the store or something. Good luck!