Sigh. I'm not going to address any other post but yours so I'm not accused of anything. So here goes...
Knowing she was 7 weeks (which IS all you knew) and knowing YOU, as you can't know strangers...you did what you thought best...ensured the pup went to someone who cared AND would ensure vet care. GOOD FOR YOU!
Now, remember, no matter if this pup is 3 weeks or 7 weeks, she is now your puppy to nurse, protect, wean eventually, and teach socialization issues such as how to play and not bite too hard, etc.
Monitor this baby 24/7. If you can't...if for any reason this baby can't have a "mom" watching her constantly...see if the vet can or better yet...see if your vet knows a breeder in your area. That could be a Godsend. But never leave your baby alone at this age ok?
You can do this...you obviously care enough TO do it. You'll lose sleep and have virtually no time for "life" so accept that and do it.
My best advice? Reach out to some breeders here in the breeders section and ask for feeding and care advice.
Not all situations are the same and not everything is black and white. Personally, I would have tried to save this baby, too. And that's all I've got to say about that.
Prayers & good luck!
ETA...yak -
