If dry food is what would work best for your situation I would try putting some in a food processor or crushing it and gradually add more and more to the baby food over several days. Then allow the particle size to gradually increase. Another method would be to switch to canned food first and if desired then add dry food as described. As long as you have had her she should be stable enough to "starve" her onto dry food. The choice of canned or dry puppy food is a matter of what fits your schedule best.