(((hugs)))
1) Yes, they do have to pay you. It's written and signed in your contract right? Copy and paste that section of your contract to remind her.
2) Give the family a final warning. Tell them that you will no longer be providing care for ______ if the disrespect towards your business continues. It is imperative that they follow routine. And give them until the end of the month to see the change.

I understand about your husband and money....mine is SO like this but is getting better (he was raised that money is #1 in life above all else). How are you advertising?