This is really 4 8 Por, testing your limit.....next time take a video cam out and tell her you are video taping her in order to study how to have a better communication method thus better relationship with her and teach your childern (as an negative example) of what is politness.
You should keep video taping her everytime, unless she stops having those specific uncontrollable disguisting reflex actions on her face.
Sorry have to be in Eng. coz i type Chinese in turtle speed.