I just read this all... and I'm so sorry. That is such a hard thing to go through. =/
I know it's not that helpful but I still wanted to let you know that I'm sorry for what has happened... I really hope that you have a strong support system to help you through this and everyone else in her life that needs help through this.
Author's response
Thank you. It is helpful actually so thank you again.
I have a pretty strong support system: My parents, sister, brother and all of my friends. Her boyfriend, some other friends, and I are all getting together tomorrow and we're going to talk about all of the memories we had with her.