Hmm,
If I won the lottery, I would give up work and become an eternal student, living off my winnings and studying a range of degrees for the rest of my life.
But, failing that, I'd work. If I didn't need the money, I'd reduce my hours to three days a week. I'm currently okay, and working 4 days. Won't work full time, even though I'd earn more, I love my day off too much,
Wouldn't ever want to be dependent on a husband, largely because I detest housework and would not want to become responsible for that. I'd rather work than manage the house. Of course, if I won the lottery, I'd get a full time house keeper who would cook all my evening meals.
In your position, I'd work. Four hours twice a week is nothing.
When my children were little, I worked part time, term time around their school / preschool etc so we never needed childcare. My children now complain how hard done by they are because they never got to go to the cool after school club with their friends, and how much they missed out! Childcare is not always a bad thing.