DD is very kind and has a sense of justice, but in some instances, I think her kindness brings out mean girl streaks in some other kids. She is young in age (is up to 14 months younger than classmates) but also just not particularly mature (I am not unhappy about it). What can I do to help? We take Covid seriously and only do outdoor playdates and some friends brag in front of her about all the sleepovers they are doing. And what is the psychology of 10-11 year olds who brag incessantly?