Wow, me and my sister had an almost identical scene about seven years ago, right down to the patch of hair I pulled out from her head. We have grown since then and we have both gotton away from the things we were fighting about. No one can hurt you like a sister who you love with your own soul. Maybe taking time (years in my case) will help ease the hurts that have unfolded in your lives. It hurts so bad I know. It will take time to heal, but I think it's probable that you will have a relationship again if you both grow and forgive. It sounds like you have sincere love for one another, if I'm not just imagining it. Tensions arise and violence rears it's ugly head, it's not uncommon my friend. Forgive yourself and perhaps in time you and your sister's relationship could be healed.