Oh no kidlove, remember that if you let them have a break that they won't appreciate it and they will take the money they aren't paying you for your hard work and spend it on something like cigarettes. Not everybody is like that of course, but we deserve to be paid and we get so little per hour as it is. I feel so bad for you because I used to be a pushover, but now I stand up for myself in life and in business when it becomes necessary. Stand strong sweetie.
I have a family who only use 5-6 hours per day and all the other families use up to 9 hours and they all pay the same fee. The family who uses the short days have NEVER questioned my fee because they love it here and they know they are paying for their space.