To tell if it is a boy or girl look at the bottom of its shell and if it is flat it is a girl but if it is more rounded then it is a boy. The reason is that when they reproduce the boy is on top so then the bottom of his shell can be on the top of hers
In my tortoises habitat I was wondering if there is anything I could put in there so then during the day she didn't have to just walk around and she could do more