I hope that you will sit down and have a heart to heart with your mom. It may feel like "she just doesn't care", but, trust me, she cares very much. There's no greater heartache for a parent than to watch their child suffer. Your parents may be hoping that since you have completed your time in the residential center and that you are seeing a therapist that you are well on your way to recovery. That is something that I know they very much want to believe. Since you feel that your therapist is not hearing you, you need to get that point across to your parents. Not every therapist is a good match for every client. Find a time when your parents can focus exclusively on you and tell them what is on your mind. If necessary, tell your mom and dad that you need to make an appointment with them to talk

! Let them know that you and your therapist are not making progress and that you would like to find someone else. Tell them your concerns about college. Your mom and dad have obviously been through the college application "thing" since they are both lawyers. Ask your parents to help you find a real voice teacher. IMHO, a friend who has "a lot more training" than you do is no substitute for an experienced adult voice teacher. (If you need some suggestions about how to find a good teacher in your area, send me a P.M.)
You mentioned that both you and your parents are changing. That is normal and happens in all families as the children mature. The major job of all teens is to gradually move away from the family nest and graduate into adult life. I think it is pretty common for a teen to feel less close to mom and dad than when she was younger. When a family has been through a crisis, as your family has, it is natural for every family member to develop some "self-protective" devices. Sometimes they take the form of putting distance between themselves and the problem. Your parents may be trying very hard not to see that you still have problems because acknowledging that you do would hurt too much. I believe that your parents love you very much and want to help you move on to a healthy, productive adult life. It sounds to me that they are trying to be supportive: they have bought a house for you and your boyfriend to live in during college and they have included your boyfriend as part of the family. They need to hear that you have concerns that are not being addressed. I sincerely hope that you will sit them down and tell them what is on your mind. Please stay in touch.