There is a mum on the school run who seems to have taken a disliking to me for whatever reason. Every time I see her she does a smug kind of smirk or stares at me. I think for some reason she thinks we live near the school but we actually live a 10/15 min drive to school. Yesterday when I walked past her she purposefully said to her child ‘we walk to school, we’re not lazy’ and looked at me for her reaction. What would you do?