I just adopted (from people who couldn't care for her any longer) a darling little yorkie girl. She is beautiful, but at nine MONTHS, weighs less than two lbs.

She is fine-boned and small-framed, but still, she NEEDS to put on more weight. When you pet her, it just feels like you're petting hair and bones.
She doesn't seem too interested in the dry food they were previously feeding her, but she is LOVING the babyfood chicken! What are some other fattening/nutrient packed foods I can tempt her with?
How about a puppy milk supplement? Would that help with anything?