Reason to be Concerned?

[momofboys]

DCG (almost 5 years old) arrived today sort of out of sorts. My son (age 2) loves her but easily sets her off. He might take a crayon from her box or something very minor like that & she'll blow up & today when he did just that she burst into tears. After dealing with her outbursts for almost an hour I asked her if something was wrong. Mom had said at drop off that it was a crazy morning. DCG told me "mommy gave me three spankings this morning so I am mad" Okay. I have nothing against spanking, I don't think she is abused or anything but it seems a bit excessive. Of course I know the girl also may be stretching the truth. Should I mention the girl's poor behavior when she picks up & hint at anything or just not say anything?