How common is this?

I am asking because I have a female hatchling that was popped by someone who was considering buying her from me at a show. She was only a few month old at the time.

When he popped her it looked to me to be very hard...so much that poop and pee squirted out with some force.

That was a few months ago and she seems perfectly fine outwardly. Very healthy and a great eater.

I recently popped her just to see if anything looked strange, and all I can notice is that when I pop her I can only get one white "nub" to pop out instead of two (the white nubs that femals have where a males hemipenes would be).

I have been considering holding this girl back as a breeder but don't want to go through 2-3 years of getting her up to weight if she ALREADY can't reproduce, and would just let her go as a pet.

Does anyone have any experience with this type of thing?