It seems to me that working 12 hours is too long as it is but since I really care for the mother I just can't say no if I'm needed at night (during my "off" time). She also uses me as a built in baby sitter for her 10 year old daughter, and a built in maid and cook. As I said, she's doing everything possible to make my life miserable, but I've earned that bonus that is left for me and have to stay to claim it. Everything the father and I agreed to she's changing. But, the hours are the hardest. I work a full month before I go home for four days (because of the distance from their home to mine) so, as you can imagine, the hours and the work she expects from me in cruel. Plus, with the stroke, the mother can go days without sleep and becomes agitated, combative, and very difficult to deal with. When she gets in the state the daughter will just leave me alone with her.
Also add a "jurat" or acknowledgement that each party signed of his/her own free will; this should be notarized.
You can find an acknowledgement online or if you can't I'll copy one from some of my documents.
But you need to. And you need a contract: the daughter needs to understand that you are not the household maid of all work and general factotum, so you need to get it down in black and white what your duties are and what they are NOT (e.g. supervising her daughter).
Write yourself a draft contract: this should specify rates of pay, hours to be worked, duties to be undertaken. Ask her to sit down and discuss it with you. Get it signed by whoever is actually your boss, which means whoever is paying your fee. And after that, when she crosses the line (she will), you remind her - politely but firmly - of what the contract is, and then if you still choose to assist her you do so on your terms, not hers.
Now if, on the other hand, this daughter is the kind of lofty b1tch who has a lot to learn about how to treat domestic staff with the respect they're entitled to, you need to give her the home truths. Listen to LadeeM, she knows.
This sounds like such a situation.
This sounds like the kind of situation immigrants often find themselves in - exploited, underpaid, overworked, treated poorly.
If you don't have a contract and if the bonus isn't significant, you're being exploited.
Since you feel like you are doing extra work, you need to explain to the daughter what you are being paid to do, that is to cook and clean for her mother. Anything extra you should request more pay. If more pay is out of the question, is that bonus really worth you being away from your family home for 30 days on, with only 4 days off? As for the 10 year old, she's old enough to help with simple chores for her grandmother.
Where is the husband of the woman to which you made the agreement with?