Arso > It’s great that that woman does so much chesed, but unfortunately it’s really terrible that she is not tzniusdik.
I am not sure are you addressing 3 yo or 18 yo kids, but why do you need to connect these 2 issues together and also address judging every person you meet? If you see someone doing chesed, discuss that act, you don’t need to either approve or discount everything that person did. Hope the kid sees enough positive examples at other times.