Aww, poor little girl!
First thing that I thought of was The Honest Kitchen, so I definitely like your dehydrated idea. Canned foods would be a good choice also. Pure Balance at Wal-Mart is very good quality that’s budget friendly. You could add a bit more water if necessary to thin it out a bit.
Something else to consider might be FreshPet foods. Mine like the pouch meals and the piece are soft. She should be able to chew those with just her jaw bones.
My friend had a little, tiny, old terrier with no teeth and a big tongue. The cute thing is that her tongue is always hanging out.
Good luck with your little girl! I’ll pray that they are adopted together.
