Well, I as a parent would try my best to make sure I wouldn't marry my daughter off to a lalchi family. And sorry just having the ability to reproduce doesn't make someone an angel and free from error or judgment. Parents make mistakes too.
and if my daughter leaves her husband, i would try my best to support her no matter what. That's whats called being a family and unconditional support.
Thank you for reminding us that parents can be wrong too.