Ok For 2 1/2 years throughout High School a dated this girl, same thing happened. What you need to learn about women is they want everything. She wants to be close friends with you because you're a big part of her life, but she also wants to be able to go out and have fun and shit. So because she wants everything, she wants to be able to have you, and stay out late and experience probably the night life and she won't be able to do that with you.

Problem is guys only want a few things in life, 1.Food 2.Sex 3.To get their 'high'. You don't need her stressing over her. Stressing for months on end will only be hard on you, make your life easier try going out with your friends, change your routine around. You'll start to realize that you don't need her anymore and she was just a 9 month routine. Sure you'll still have feelings for her and they might come back, but don't stick around waiting, make the best out of any situation.