There is one thing that is constant on Monday night, and don’t you even say Monday Night Football. For me it’s sister night and tonight will be my last one living here in Dallas before I’m off to San Francisco. Sister night was developed (look at me all sounding patent-pending, trademark-like) by my 2 younger sisters and I when we realized it was stupid to be in the same city and not see each other every week. So we made a deal to pick a day that worked for all of our after-work schedules and get together sans-husbands, friends, boyfriends, etc. Our plan was great on paper: we would get the…