Why did she ignore me? Should I even bother contacting her anymore?

So I've been talking to this girl from school for like 6 weeks and we don't see each other at school but we talk often and chill outside of school. We only really hang out when she asks me because every time I ask her to go somewhere she says she can't or ignores me. I flirt with her often, she calls me at night sometimes, she knows I like her, and for some reason she wants me to move in with her and her friend when we graduate. We've cuddled a lot, like she came to my house and were all over each other but we've never kissed or had sex. So on Friday night I texted her and

she said to come pick her up but my friends

wouldn't let me go cuz I had a drink. So I told her why I couldn't and she said she to send the

address and she would see what's up. I waited

a hour(she said she was 5min away) and texted

her, no reply. Called her no answer. Then called

her a hour later and she answered and hung

up! So the next day I texted her if she wanted

to chill and no reply. A couple hours later she

snap chats me saying hi and I snap her back but she didn't reply after that. Like what the hell, she's never ignored me like this before, I don't get it. I have feelings for her and sometimes she acts like she's really into me and other times she acts like she's not. She's really special to me idk what to do. What do you think she thinks of me? Why do you think she just started ignoring me like that?