Help PLEASE!!!!!!<><>!!?

So I used to be best friends with this girl Christine. Everything was going fine except in like October she got really mad at me one day and said "We are NOT getting along so we need to spend some time apart." I was like ok... but can you at least tell me what I did wrong? And she's like YOU KNOW WHAT. And then I was really confused but gave her space. I heard through the chain she was mad because she thought I didn't want her eating with some of her friends or smthng... So yea I haven't done anything mean to her I've been perfectly nice. I congratulated her when her baby brother was born and she just said very rudely THANKS. I miss having her as a bff... like i MISS her. And so I decided today to text her and i was just like its been SEVEN months... are you stillll mad at me? txt back. and of course she didn't. i mean even if your bff messed up really mad (which i dont think i did cuz i didnt even know WHY she was mad at me at first) wouldn't you at least try to resolve things??