I need your help. My son's ex girlfriend and his 5 yr old son moved in with us. They are still very good friends and I like her. She couldn't afford to pay $1,000 a month rent with all her expenses so we agreed to let her live with us until she can find a more reasonable apt. She said she wants to contribute and can pay a bill or whatever. She uses the washer and dryer, cooks, does buy food at times, watches tv, lights are on late, I was wondering if you could help me out with deciding how much I should ask her to contribute. What would be reasonable? She is a legal secretary, 34 yrs. old, very smart and brings home about $800 a month. Thank you, I really appreciate your feedback. xoxooxoxoo