Need to have relation with her to do beach, and for that Dad need to come home, I think.
For Maria, you need to go on date with Rachel and get caught when getting a titjob in back alley, then I think stepmom (Maria) punishes you with daily chores (laundry, bath clean, dishes) 5 days a week, until Dad come back and/or you advance her storyline.
PS. you can avoid getting chore daily by going out through the garage, if you get the chore and fail do to in afternoon your money are taken, until next chore .... or dont go on date with Rachel early in game ...
QUESTION: is there any other job scene in Hospital except the expeimental syringe one?