What can i do?? it's like takling to a child!?

Oh my god. You are in a deep doodoo pit. I reccomend telling her to stop 'GIVING' you things that you can't buy! That's like her forcing you to buy something. Im pretty sure that illegal. U should go up to her next time she demands a payment and say: "We are not going to pay, just like we are NOT going to buy all this stuff you 'gave' us!" Then give all the stuff she 'gave' you back, and get on with ur life and ur new kid (congrats btw). if she throws a fit, just ignore her! she cant force you to give her money. watever u do, hold ur ground. old ladies thirsting for money can be deadly LOL JK