Welcome to YT!!!!! I too am sorry that the first litter ended so tragically. If she has problems the second time, I wouldn't try again. As far as your million dollar question, you could be right. They don't want anything to do with the pups if there is something wrong with them. It is so sad and hard to deal with situations like that. We humans are just the opposite. If you do breed her again, I hope it is a wonderful success! YT members will be able to help you in many different instances