Last year I lost a few cochins that pipped on the wrong end. I waited too long to help. Just watch closely. The big breed chicks often can't turn in the narrow end to get all the way out and exhaust themselves....
If you had to intervene because it has been in there a long time AND it was on the small end it could have trouble walking. Their legs can tend to bend kinda crazy so watch and make sure her feet are not turned under.