You don't say how long the family has been with you. If it has been less than a year then in a way I don't blame for them for being a bit upset - kind of a bait and switch - you presented one contract with some attractive things in it that drew them to your daycare then once you had them hooked switched it out for a less attractive one. I can see that that may be the way they are thinking.

I don't think the changes are significant enough for them to get so upset. Wonder if there is something else going on. You don't say what all the changes are but one was not a change just a clarification, the other one is debateable. I assume the old way amounts to not paying for days not used. Unless either of you are away a lot then it doesn't matter.

She agreed because she didn't have options at the time - ie no time to look for alternate care before the changes took effect. How much warning did you give of the changes?