So sorry to hear this. I have no experience with this, but there are others here that have. I do know that the surgery is very hard on them, and there are a couple different types of surgery also. You need a specialist to look at her to tell w
if she is a good candidate for surgery, or if she just needs to live on pain meds all her life. There is also a laser treatment that helps with this also. I'm so glad you called the puppy owners and told them this and it's too bad you didn't know this before you breed her, but it's too late now. At least you know now and can get her spayed so she will not pass this on to other pups. Again I'm sorry for her and you, and please keep us posted on her progress.