Originally Posted by e.j.:
I don't think you're in the wrong either, especially under the circumstances you've described. Parents who have never worked in this line of business often don't get it. While she's right that not all parents are no call/no shows, you had no way to know whether she is or isn't "that parent". Asking her to confirm the appointment is reasonable, in my opinion.
With her response, she's just given you a glimpse as to what she's going to be like to deal with as a parent. Maybe it's my mood lately but I'd be very tempted to suggest that she continue her child care search elsewhere because "not all day care providers are willing to put up with her attitude 'Just food for thought.'" (I wouldn't really do it but I'd be tempted!!) 
Just tempted?? That's(ideally) what I would've done. Does she get reminders from her dentist and veterinarian? I do. I always thank them. This person sounds like a.....well I wouldn't have stayed open for a tour.
How did it work out anyways, just curious CenterTeacher20?