Work problems

So about 4 weeks ago I started working for a knew family as a nanny and I thought it was going really great. Toll today the mom asked my why I don't take her kids out to the zoos and the aquarium and to the water parks and i told her will we do go out every day to the parks and the beach and the pools and when the aquarium is free I take them if they want to go .she then went on to ask me why I don't take them out to eat places I told her well because you have food In Your house that the kids eat . she then went on to say that she pays me a lot of money that I should at least treat her kids to that stuff so I told her no I will not spend my hard working money on your kids but if you want me to take them out then just leave me the money for them and I will do it and she said o I will just take it out of your pay then so I told her if she does that I will no longer be coming back and I will be letting her ex husband know that she said that because he's the one that hired me and pays not her . So she got mad . I just don't believe that she thinks I should spend my money on her kids it's crazy to me .