Heather Hubbard

From Muppet Wiki

Heather Hubbard is daughter of Sherlock and Mother Hubbard in the Mother Goose Stories episode "Mother Hubbard".

She helps to located Barkley's missing bone, after her forgetful mother and doltish father are unable to solve the case. She visits the market to ask the butcher about the missing bone and learn that her mother had forgotten to obtain a bone in the first place.