What a sweetheart Baby is! She is an absolute doll. My heart breaks for all her problems.
I would definitely talk with Baby Bear's mom about wheelchair options, since she has been thru several people & really believes she has discovered the very best person to work with these little ones.
I love how you describe Baby's spirit! She needs a name that reflects that. How about Tib or Tibby, could be short for Tabitha.
Is there anyway you can get in touch with whoever bred this girl? They really should not bred another dog in this line ever again!