S.O.
If she was scared when she fell she might not try it again. Maybe try the crib again and see how it goes. If you decide to stay with the toddler bed you might just have to let her cry it out. Some people told me it is okay for the child to fall asleep on the floor the first few nights and eventually they will learn to stay in bed. My almost 3 year old son tells me he has to go potty 4-5 times a night to get out of bed.
Good Luck!
S.