i think the only way to deal with people like that is to completely ignore them. here's what i learned a long time ago: when all my kids were young, their stepmom used to try to make me feel inferior. i used to allow her to ruin my entire day...by reliving the conversation we may have had in which she would find fault with my mothering skills, etc. then it occurred to me i was allowing her to have power over me. like she had "won" so to speak. after i figured that out, i wouldn't allow her to bother me anymore. i also wouldn't allow her to make me say things and be a certain way that dishonored me and my integrity which i was trying to display...best wishes and don't let them get to you.