Thank you all for your replies!
I will have to ask her what and how much she is feeding her. She might be feeding her a crappy food and that could be part of it too.
This dog is a spaz. She is sooo hyper she can't sit still. I think that's what the vet told them. She is just burning off all she eats.
So I will suggest puppy food first and maybe increase amount if just the puppy food doesn't work.