How Do I Get Her To Like Me Again?

I was at my friend's house (Kelsey) when she was having a party. I went into her room, shut the door and spotted a computer. I went on and found that she had left her facebook on. I went into her pictures and started to them. Then Kelsey came in the room and caught me doing this. Then she ran out of the room, i climbed out her window and ran home. How do i get her to like me now?