Daughter hitting me

She is 12 and has SM/social anxiety. Recently she has hit me when I’ve asked her to hand over her phone because of refusing to do homework. The 2nd time she hit me, it was all over and I have several bruises.

I want to handle this effectively and feel I need to bear in mind the anxiety issues she has. She is silent all day at school and unhappy so has more reason than many children to lash out at me.

I would be grateful for any advice either from parents or young people who relate to this post. Thanks