How can i win back my BFFL?

ok me and my BFFL bell have been fighting for 2 or 3months. And she keeps saying leave me alone in and email and on msn,she blocked and deleted me. I try saying nice stuff in an email and im srry its all my fault can we be friends again etc. But she keeps saying leave me alone and she doesnt want to be my friend.Her dad died 13th of june so shes obvisely sad and greaving bout that, i feel so bad for what i did,i was such a reck, and she called me a lier,coz i pretend to be skye on msn and see why she didnt want to be my friend. And she said coz im annoying,true coz i was sending alot of emails to her. But how can i get her to be my friend again? theres gotta be a way, shes 11 and im 13 but weve been friends for 2yrs and she would allways say im the bestest friend ever. She is really smart and mature for age, and she is a real true friend! i know me and her are ment to be friends! ive never been so sur bout something in my entire life! and yes i know friends come and go,but bell means the world to me. Theres gotta be a way to get her to be my friend again?plz,your advice would really mean alot to me!