Definitely. Although, in horses, head tilting can be signs of neurological damage.
Here is an article talking about inner ear problems. The cause of this is probably trauma. When you took Stella in and the vet said it was probably her ear, did he do any diagnostic tests on her to see if anything deeper was going on? (Like an infection) I'm not saying she has an infection like the article talks about, but she probably did injure her inner ear and there could have been some damage from inflammation or trauma.
Have you filed her nails or given her an oatmeal bath?
Here is an article relating to dermatitis in case her scratches are due to accidental self-injury. Again, this may not be the case, but it would help to file nails/give bath anyways.
Here is a detailed article about bathing.
This is another set of ideas on the scabs/scratches.
Here is a guide to clipping nails, which should be done about once a week. Be careful not to cut into the quick, which will cause a lot of bleeding.
I hope I'm not giving you too much at once. Don't panic at all these conditions, but calmly assess what you think is going on. You can give your vet's practice a call and often times a vet tech can help you over the phone.