is it normal that i wish my teacher loved me like a daughter

I just wanted to say I'm so relieved I found people who really get me! I have a teacher at school who I absolutely love. I don't know how exactly it happened. It just kinda did. At the beginning of the school year I didn't really have any favorite teachers until second quarter came along. Then all the sudden I found that one teacher who really understood me. I found myself staying after class every day to help her put away the chrome books and then trying to find a few extra minutes after that to catch a small conversation with her. I feel as if I could talk to her about anything and as if I've never cared about anyone as much as I do her. She is truly an amazing teacher. But now the end of the school year is coming up within the next week and I will be going off to high school. I'm afraid to ask for her phone number but I'm also afraid that if I don't I'll never see her again! What should I do! I really don't want this school year to end I've never had a strong relationship with my mom and I don't really have any trusted adults in my life besides her. I sometimes even end up wishing that something horrible would end up happening to my family in hopes I can go live with her. I'm afraid to tell anyone this in fear they will think I'm mental. But really what do I do? How do I ask her for her number? I can't lose her she is so important to me I don't know what I'd do without her! She really is my heart and soul my diamond and pearl.