It is NOT obvious I side with the mother, but that in my opinion bullshit is not as bad a phrase or word as some others may be and that a three year old will frequently repeat what is heard at home and not have a clue what it means or comprehend the impact it has on other people ... in a word ... the child is innocent.
But if you REALLY want to pick on me, let's set some parameters;
ALL outside influence is to be forbidden and NO child should be in ANY school and you should stay home with your own child and teach her yourself because you just can't trust others to be you.
You ignored the statement from the daycare center that said this was a repeated case of misbehaving.