SISTER BETRAYAL,is it forgivable?

I come from a family of six sisters and one brother. Growing up in such a large family, with so many different personalities, there was always some argument going on with one or the other of us. Of course, those are just normal growing pains and those squabbles really do not mean much in the end. However, recently my sister did something that was considered unforgiveable. At a family gathering that my youngest sister had at her house, my other sister was found in the garage with my youngest sister's husband and they were kissing and making out. Needless to say, they were both drunk out of their minds. But this was truly a serious offense, even though they were both drunk. My youngest sister was devastated. As a matter of fact, she locked her husband out for the night. They had both really hurt my youngest sister. And after all, aren't sister's husbands and boyfriends off limits? But I guess when you are drunk you can really lose your judgement easily. Time went by and there was bad blood between my two sisters for two or three years. My youngest sister felt betrayed and my other sister felt guilty. And of course, they were both too stubborn to call the other one. Finally one day my youngest sister decided to take the first step. She called my sister (the one who had done the wrong) and told her that was willing to forgive her. She said that she just could not live her life with such a grudge. She said that this grudge was just holding her down, like a weight around her neck, and she wanted to get rid of it. So she reconciled with my sister. To this day, she says that one of the best things she ever did was forgive my other sister. Sometimes forgiveness and reconciliation are exactly what the situation calls for. Besides, I believe that blood is thicker than water. Anyway, I am glad that I have both of these sisters back in my life together again.