Congrats! I hope the puppies make it.

You know, it'd be a good thing to ask the vet whether or not Mom and Pop's health problems are hereditary. Even if they are and there's nothing you can do about it, it's nice to plan ahead for any roadblocks. I know it's a tough reality to face, but that's what I would do because it sounds like Mom and Pop are reaaaaally sick and their conditions could be hereditary. Is it a heart murmur? I think vets can detect heart murmurs in young puppies.

Maybe next time you can use potty pants for Nilla, LOL. I think that might work