I agree with apples and playfelt ..... Do not go to her house and if you are leaving a message asking when she will be coming by to make payment I would not threaten collections at that time..... It kinda gets people's back up and actually I wouldn't mention it at all. I would wait till she either says she's not paying you or just ignores you and then just file with collections she will find out soon enough. When speaking with her or leaving a message you could offer to have her pay by emt ... That way she doesn't have to come to your home again.