The sheets for parents' evening appointments were put in reception today. The school does two evenings with appointments between 3.30 and 5.50. I will admit that I have been lucky in the past and have always managed to get one of the 5.50 appointments as this is the time I normally pick DD up due to working ft.
Anyway I pick DD up today and go to the two sheets of appointments for her class. Both the 5.50 appointments were taken. No problem as work are extremely good and I know will have no problem with me leaving 10 mins early.
What I don't know whether I should be 
about or not is both appointments were for the same child (one mother and (presumably) new partner and the other for I guess child's father) that I can very much understand as there is no way I could go to an appt with my ex. BUT the mother is the school receptionist/secretary.
On one hand I can see her writing her name in before putting them out so not giving anyone else a chance, but on the other I don't see why she should wait a couple of days before putting her name down. So I'm on the fence about my own AIBU 
The thing that sways me towards being slightly peeved is that I know she doesn't work that late as she's never there when I pick DD up (on a REALLY good traffic/P&R day it can be as early as 5.40) so why does she need one of the late appointments. So what do you think?