friends problem..is it my fault or is it hers?

[Giselle]

so i was at my friends B.house for a party and i got really bored.so i called my friend S. and we talkd for awhile and then B.askd if she cann talk to S. so then B.startd talking to S.abotu drama that happen in the past bewtn.me,s,and b.and about a guy.i was gtn mad cuz that was in the past it didnt matter and we agreed not to speak of it.so then i askd for my cell back.in a nice way and B. yelled at me saying i was being rude for interupting.so then i let it go.but then i askd for it agian and B threw my cell on the cemet.i gt mad and left.when i went bck to get my stuff.B.locked the door.& totally tried to hit me,and she was yelling at me saying i was immature.and she even hid my camera from me. i heard that she says it wasnt her fault that that happen.but i think she should apologize to me 1st.we havn spokn since then its been 2 months.what should i do?if i go to her 1st shes gnna think i need her..whic i dnt. thats just the way she thinks.is it my fualt? or hers?