Your hard-up step-daughter offers you a deal.
I taught her how to please men, how to make them cum as many time as possible, then I hook her up with my clients, charge them $1000 for each shot and extra $300 for cumming inside, then I get 50% cut, win win situation. Then I bought her a model X, she loves me. Happy ending
The scenario can also be played out quite harmlessly and responsibly. And the good stepdaughter looks for a serious, real job