Before having a child I was introduced to Sarah. I'm a very friendly person but my first impression wasn't good. She was very negative but I gave her the benefit of the doubt for the sake of my friend who introduced us. We saw each other regularly for a few years through mutual friends. We then both had a child around the same age, they are both now in the same class at school. She wants to come to our house often and her child often invites himself. He doesn't tire easily but my child is much quieter and does. I've put boundaries in place because my child needs a break after school and likes to switch off and relax rather than be social. Fast forward and this child has now switched classes to be in my child's swimming class. I used to love swimming but now find I'm dreading going each week because *Sarah is very negative and judgy about others. I just feel very uneasy around her. I'm not sure what to do. I don't want to be friends but our children like each other for the most part and my child asks to see this child often. Do I need to put my big girl pants on and grin and bear it?!