Anonymous wrote:I say no, because it's unlikely the mom can influence the at-school behavior of her child.
I think you need to counsel your daughter regarding positive actions or ignoring/distancing behaviors that may help to reduce the impact on your daughter. I think if you speak simply, you can share your suspicions about the motive. It might help your daughter to understand or just to start figuring out why her friend is lashing out.
At most, regarding the other mom, you could share a one-liner like "the kids seem to be struggling to be friendly this month".
I tried to encourage other friendships. There is a new girl in her class she seems to get along with and I said we can have a play date with another friend.