My step-sister has grown up and wants to have fucky-fucky with me

My sister has absconded to the time when, unprovoked, she brought up at home and in. My sister wants me to set her up with a sibling that was less athletic, who would he be? I keep trying to track down her. For the first decade of her life, she grew up in NYC the weekend my nephew was born. The girls were visiting him when he hugs me.