After reading the Mother's account and accepting that both sides are probably exaggerating, and even taking into account how aggressive the owner's rant on FB was (expletives, seems irrationally mad about it all), I still kinda fall on the side of the owner!! Ha! The mother's account just sound so ingratiating:
"my 21-month old"
I mean please, lady. You have a 2 year old. A terror 2 year old, just like all of us. YOU made her wait 30 minutes for breakfast by choosing that diner, then she waited another 40 minutes for pancakes. No wonder she flipped her lid. Even if she cried for 10 minutes or 40 minutes, and even if the owner screamed at her or not (which is wrong), I still think the parent's created the situation in the first place and are kinda acting like martyr jerks.
2 -cents, signing out.