She does look young so I will give her the benefit of doubt that she just doesn't know.

OP, we need better pictures to give you a good conformation evaluation. Try standing her up on solid ground without her turning her head so we can look at her neck and shoulder. Take pics of her legs from the front and the back. Do you have her pedigree? I would love to see her bloodlines.

PLEASE do not breed any more until you know more about conformation and what would make a better match to your mare. I hope you keep your foal for it's entire life but when breeding you always need to think of the future of the foal if for some reason you cannot keep it. Unfortunately there is not a market for the foal you produced, it CAN'T be registered as anything so it will not have papers.