Robyn,
In addition to the other suggestions, try this:
http://www.instructables.com/id/Put-weight-on-your-dog-with-satin-balls/
This is supposed to work wonders on emaciated dogs… I would just use coconut oil instead of vegetable/flax oil.
Another option:
http://therobertabadydogfoodcoltd.com/
This company makes kibbles that are close to 800 kcal/cup – designed for weight gain. I would check out the Maintenance and Stress Adult formulas. You could maybe even throw some of this kibble in the satin balls, or feed satin balls for one meal, Abady for another.
Good luck with everything, and you are great for taking this poor girl in!
