It takes a lot of courage getting help, especially when that help is spending time in hospital. You need your family and good support from them will make a huge difference to you. I'm sure they don't think you a leech and that all they care about is seeing you well. It can be hard losing some of the independence you had before, but you will get it back again when you go back to school. The gap year is a good idea as it allows you the time to rest, recover, get back on track, continue with your treatment etc without affecting your grades.