The reason I asked her age and whether she had been with a male is because she could be gravid if she is around three or older. If she has no place to lay the eggs, she could be heading towards eggbinding. I can't be sure of this...so it would be a good idea IMHO to take her to a vets.

As was already said...the male grabs the back of the neck when he is trying to mate with a female.