Friend keeps saying something after I told her it hurt my feelings?

My friend whom I've known for a long time has hurt my feelings. We were discussing stuff one day and we were on the subject of popular artists. I said I didn't like over autotuned mainstream music. It just wasn't my style. I don't like the sound of autotune. Well, now ever since she's grown closer to another friend who apparently makes fun of hipsters; which they think I am because I don't like many popular bands or games. She's been saying "That's too mainstream" constantly to me. She said her friend and her make fun of hipsters. So, I felt sort of annoyed at first. I hoped she'd stop mocking me. After a few days of her saying it. I told her it was bothering me, and wasn't funny. I asked her politely to quit. She said she wouldn't because even if it hurts someone else, because she didn't mean it to be taken that way. She also told me to lighten up. I felt like I was brushed off, and my feelings were irrelevant. She said she cared about my feelings, but she still said she'd keep saying it. I asked her if she really did care, and I got no response. It's not so much the "it's too mainstream" thing that's bothering me now. It's that she doesn't care about how I feel. Also, she constantly goes "Your mom." I mean, CONSTANTLY. My mom was in the hospital after getting in a car wreck which I told her about, and that's all she kept saying when I was talking. I was sorta upset at this too because my mom had broke her back and could barely walk without crying. I just thought it was uncalled for; even her friend who makes fun of hipsters told her it was. A year ago this girl also gave my phone number away to a guy I didn't know, had him text me, he knew my name, I was worried and told her about it, she said "Creepy. I wouldn't tell your mom about it." I knew that sounded fishy. I told my mom some random guy was texting my phone, and I was terrified that he knew where I lived. (I never gave my number to anyone but my friends.) At one point I was crying, and she finally admitted she gave it away. The next few days, she called me a for no reason, and kept bothering me online. She even hacked my online account. Is this person someone I should be friends with or not? I'd hate to end our 7 year friendship, but she keeps doing things to hurt me. She hardly ever talks to me anymore and when she does it's "that's too mainstream" or "your mom." She's always with her new friends, and doing what they want to do. I'm rarely invited anymore. I'm sick of her not listening to me. Again, it's not so much her saying "It's too mainstream" it's the fact she won't stop saying something to me after I told her it was annoying, and could be taken as mocking. I'm afraid she'll give my personal details away again too. Should I keep her as a friend?