Ummm Briony holding that marker… ???

My mom would always need to bring a friend with her everywhere for what ever reason and this is reminding me of that.

What does Sarah need to bring a friend to her daughter’s schools art show? Why does a stranger need to come evaluate a bunch of kids work? This whole story was so strange and really makes me wonder about the dynamic in their house. Also I wonder if she asked the parents of the other students whose artwork she showed if it was okay to show that to her 2 mil bot followers.