Yup I agree .... She thinks she is your employer !!!! But actually you run your own business and you provide a service for which she requires. This will not likely get better but much worse. So tomorrow remind her about the forms and payment needed for monday... And if she comes on Monday without the fees and paperwork tell her you are not able to provide care. Forget cheques start using EMT's then there is no excuse for forgotten payment and ask for payment on the Friday for the following two weeks. Good luck