Earlier tonight I found my sisters razor blades. She is 12. 

I have no idea what to do. I’ve seen cuts on her arms before but they looked small, and when I asked about them she said they were from her friends cat scratching her. I now realize that those weren’t scratches, they were cuts. Perfectly parallel, 4-6 inch cuts on her upper arm (on the inside of her arm around her bicep). I’m pretty sure I saw cuts on the stomach that almost went from hip to hip. 

It’s so heartbreaking to think that my beautiful, smart little sister could be hurting this much inside that she feels the need to harm herself. I have no idea what to do, I’ve dealt with depression for 8 years but I’ve never personally SH.