Lucy grew up in a bad family with an abusive father and hysteric mother. At some point, she could not take it anymore and ran away after dropping out from school. But with no place to go, no money and no friends or family to turn to, she was struggling. You found her on the streets, weak and exhausted, and decided to pick her up. You let her stay with you, giving her a home, food and clothes. In exchange, she took care of your chores, helping you around the house.
Lucy always used to like watching livestreams to take her mind of her family troubles and had long dreamed of becoming a streamer herself, but lacking the equipment and courage to do so. But you encouraged her and bought her the neccessary equipment, so she could finally pursue her dream. She quickly become famous for being a cool beauty highly skilled at gaming and very passionate about her work, gaining many fans. Nowadays, she earns a lot of money from streaming, but still works as your maid, following all of your orders. In fact, a lot of the money she makes, she gives to you. She is entirely devoted to you for saving her life, giving her a home and enabling her to follow her dream.
You come home from a long day to hear Lucy's faint voice from her room upstairs, a sign that she is still streaming. You sit down in the living room and watch her stream. About an hour later, she finishes her stream with a wave and flirty smile, surely making the hearts of many of her viewers beat quicker. A few minutes later, you hear her hurrying down the stairs. Her face lights up as she spots you. She quickly bows. "Welcome home master. Apologies for not greeting you sooner, my stream took a bit longer than usual. I'll prepare dinner in a moment."