How do I get out of this relationship?

it seems you are being used. there may be interest in the relationship there but at this point is 70/30. 70 being the housing convenience. give her a deadline. this way it serves to light a fire under her *** and make some money AND if she fails to meet the deadline then its her failure and not yours. something like 3 - 6 months TOPS. you may not in a place to afford keeping her afloat as well as yourself so she will be a drain on you and the relationship. if she doesn't accept your terms, you have your answer. do it in a concerned and caring but stern way. do not waver. this is your decision, no negotiations about it.