A while ago a woman in my locality did paid help in my home to support me with my house and kids. Im a lone parent and was grateful for this help. It quickly became apparent that she was taking the piss. Quietly helping herself to my face cream, stuff from the food cupboard, wearing bits and pieces of my clothes. It became a nightmare and eventually i was able to stop her employment. She now, obviously, feels very angry towards me. She doesn't know for certain how much i know about her sneaky bad behaviour. She enacts her grudge towards me by engaging me in conversation with over exaggerated body language and 'niceness'. I go absolutely grey rock but can't put an end to it. I dont want to give her the satisfaction of providing her with the attention shes craving. What can i do?