Problems with Inlaws and their puppy, what to do?

About 3hr ago my Inlaws dropped Chloe, their 6months old German Shepherd puppy off at our house. They are going on vacation tonight. We were susprised that they asked us cause usually we dont have much contact to them, guess they couldnt find a kennel. We have two 3yr old labradors. My hubby and I realized pretty quickly that something was wrong with Chloe, way to skinny, whines alot, scratches herself to death. I decided to thoroughly examine her and what I found was shocking. She was flea infested and has bloody sores all over her tiny body. My hubby and I went straight to our vet. He gave her a topical hydrocortisone lotion and we gave her frontline from our dogs. Its shocking, I have never seen something like this before. I just had a look at her sores again. She finally lets me touch her. Its heartbreaking when she looks at me with her big brown eyes and gives me kisses while I examine her. We called the Inlaws . (to be continued)