I'm so sorry, that must have been so upsetting to find *hugs* Please don't blame yourself, she was just too young and it is not your fault.
Do you have a
cavy savvy vet that could give Puppy a check over and make sure she is definitely okay? I am so glad she didn't have complications herself as well as her poor babies, I've heard of far too many momma's who didn't make it too.
Take care of yourself and Puppy ortal