Should i forgive her? 10 points best answer!!?

my best friend natalie for 8 years and i just had our first fight. she threw a total hissy fit in front if another one of my best friends. she cussed me out and lied to me several times. i texted her about it and she called me a "retarded idiot" then she said "oh just forgive me already" and she hasnt apoligized yet. she said i was "being stupid about all of this crap." this has been about a month ago. should i forgive her? i am starting to feel guilty, and should i feel guilty? was it all my fault? i dont think our friendship is ever going to be the same. what should i say when my reunion comes along, she always went with me. and thanksgiving week? she spends a whole week with me. and we celebrate our birthday together and its a few weeks away. any help? thanks you SOOO much!!!!!!