A girl I know constantly corrects other people including me. She always has to be the loudest in the room. Shes extremely patronising..and she talks about other people in a slyly bad way behind their back but she does all of the above with a smile and a laugh. I work with her so all I can do is distance myself but she always asks me to lunch. How do I deal with this? It's highly annoying and impacting my self esteem (and probably others in our team). The manager loves her though.