I worked for a couple and their daughter for 3 years, no days off, just hours on weekends. If the daughter in town father passed I then took care of wife. They refused to take taxes out and said their tax guy was against it? Then last contract I wrote stating that I must have weekends off and doctors not that specified I needed some time off. My stress was very high. I was ignored then let go and slandered me to other's and let me go after new contract stated needed time off raise and daughters help.
If your stress level was very high, perhaps this is the opportunity you needed to look for a different line of work. You know the saying, when God shuts a door, he opens a window? Maybe this is the window.
Good luck.
Was the new contract signed by all parties, which stated you wanted weekends off, that you wanted a higher salary and the amount, and that the patient's daughter had to help you thus listing what the daughter would be doing to help you? If it wasn't agreed to and not sign by all, then you wouldn't be able to work without a contract, thus the reason the family let you go.
It is a legal violation to hire people as contract labor when the position does not qualify.