I’m also looking for a book probably written in the 50’s/60’s about a witch that would grant wishes but the children had to give something in payment. So one boy wanted to be able to talk to his dog, but because it was French poodle, it only spoke in French. Another girl wanted a wish granted and the witch asked for her eyebrows.
I think this is The Good American Witch by Peggy Bacon.
https://www.goodreads.com/book/show/20412589-the-good-american-witch?from_search=true&search_version=service
THANK YOU!!!! THANK YOU!!!! Yes this is it – I just wish our library had it ($72 on Amazon!). Wow – one book down, one to go.