Sibling issues

Probably over the top I am sure, but I choked her once, just because I knew I could and she couldn't do **** about it. I didn't let go until I could see the veins in her eyes turning bright red and her face was turning grey. After I let her go, I told her if she ever gave me a hard time EVER again in our lives about anything, that I would finish the job

This is exactly what I do whenever I meet someone for the first time. It sorta lets everyone know where we stand. Works for me.