Well put, SoulfulSurvivor. After reading your post, it occured to me that she may well want time to herself because she feels smothered and--figuratively speaking--needs to breathe. She's right--her parents shouldn't be involved in this and their involvement, no doubt, is making her feel even more smothered.
Steverob---From your previous posts it sounds like you didn't have any other friends. If you have such loyal friends that they "would die for you", then spend more time with them. Do you have any interests or passions? If so, cultivate them--even if it is a group you chat with online. It's not easy but find other things to occupy your mind.