Also - when I was younger I had my own set of uneven bars and my own gymnastics trampoline in my back yard.
It is safe is she is just practicing the skills she can already do. I would not encourage her to learn overly new skills until she is confident enough in the gym first. "Baby giants" a.k.a long swing pullovers are quite harmless really there is not much danger there - if her legs dont make it over they will just fall back down again and she will still be holding the bar anyway and there is a mat under her.
It is safe is she is just practicing the skills she can already do. I would not encourage her to learn overly new skills until she is confident enough in the gym first. "Baby giants" a.k.a long swing pullovers are quite harmless really there is not much danger there - if her legs dont make it over they will just fall back down again and she will still be holding the bar anyway and there is a mat under her.