man i have 3 sisters myself ...so i sooooo know what you mean ....to say life was always together and best friends......well u just cant say that...but there is no deeper bond....
she sounds like shes a competitor that needs to learn poker...well girl u have half the job licked .....for its the willingness to win that is the basis of this game..... we/she will show u some tricks to the game ..the drive to win can only come from u... sounds like you will be great at this....glgllglglglgll! and welcome aboard

right here is where i would put a "girls rule!" smiley if there was one...