Would anyone be interested in a sister incest line? My idea is that one sister is very rich and successful and the other has had an amazingly long string of bad luck, constantly getting fired from jobs, having accidents, getting dumped by friends and romantic partners out of the blue with no explanation, getting evicted from everywhere she lives until she ends up selling her body on the street. What she doesn't know is that her rich sister has been following her progress and using her money to sabotage her life at every turn. Now, when the poor sister is totally desperate, the rich sister makes her an offer; come and live with her and have all her needs taken care of, but in return she has to be her full time sex slave. I'd play either role.