"....a parent email you to say that they had a few things to discuss with you regarding a past event and future but said that they will do it 2 days from now..."
Who does that? Weird?! I guess I could understand an email saying "can we set up a time to meet/phone call?". I probably would respond with "it's tough to talk during daycare hours, I'm free this evening (or during nap time) for a phone conversation if that would work for you?"