DD is friends (I use the term friends loosely) with a girl at school, girl can be nice but is mostly unkind to DD and sometimes is just nasty.
DD often comes out of school saying girl has done/said this to me today, their teacher is involved that is how often incidents happen. This has obviously given me quite a negative view of the girl.
DD is having a birthday party soon at home and wants to invite this girl, I really don't want her to come. I am worried that she will ruin things for DD.
A bit of background about me I was seriously bullied for 5 years when I was at school and this brings back bad memories for me.
Am I being unreasonable to say no to this girl or should I let DD have who she wants to her party?