Lately she was treated for fleas. All seemed well until I noticed her hair started missing. And now she has a huge scratch on her neck and smaller scabs all around her head. I'm worried because I'm financially unable to take her to the vet. She's never had a shot either. She doesn't go outside and lives with her indoor sister who's had all her shots. I'm concerned because she is like a little daughter to me. I would be devastated if she was go at only 2 yrs old. Please someone tell me some advice.