Kagome finds herself in a Geisha and the only way out is to become a Geisha....but she refuses. Sesshomaru shows up and pays down her debt. InuYadha finds out she's there, brings money but of course Kagome bills keep mounting. Sesshomaru eventually pays her off her debt, she travels to a farm and finds InuYasha happy there and then finds Sesshomaru where she becomes his mate. Fairly lengthy but I don't remember if it fanfiction, dokuga, or spark.

Rating: Fairly certain it is M or MA

Thanks for looking.