I can't answer for your heart...but in CT she would go anyway. Here they just have to turn five by either Dec. 1 or Jan. 1, I forget which, so HALF the kids start at four. I held my first back (as in, waited for him to be five!) b/c it seemed crazy to me to send him at four (end of Nov. baby) - I came from a state with an August cut-off. Then, he was bored to death. My next, I'll probably send at 4, with all the other kindergartners here. So....I suppose it might be damaging and inappropriate, but NY and CT do it to all their kids, so she'd be in sizable company!