Someone please be kind enough to read this and help me? 10 points.?

She's a good friend. But we did go through some things unfortunatly, and at first when me and her were talking things out I told Kelly my sister than me and the girl made up but we aren't exactly friends anymore. She looked at me with disapproval and was like "WHY" and I explained. Then she went to bed and after me and my friend kept talking and decided we wanted to be friends again. My sis cares a lot about me and she's been backstabbed a lot which is why she's so overprotective but i KNOW this girl and she's not a backstabber. Help please?