I wanted to congratulate you on keeping some self control and limiting your si to a few scratches as opposed to what you felt like doing. This is a good thing.

My experience with my sister is not pleasant so it doesn't surprise me the way your sister reacted. This feeling is probably totally bases on my feelings toward mine. Grrr. She would do anything she could to upset me. Anyway, know that you are not the only one who's sister is next to useless when it comes to support and kindness.
Carrie