DD (9) has her first overnight school excursion next week.
Today they we asked to pair up for the bus trip there and back. None of DD's group of friends are in her class, so she has found herself paired up with the girl who has been giving her a hard time all year.
She's burst into tears as soon as we've got home 
This girl has been quite nasty to DD, calling her names and a few weeks ago hit her in the face with a ball at lunch. This was reported to the teacher on duty but the bully said it was an accident and nothing happened.
Her class teacher hasn't been very helpful either when DD has gone to her when she's been upset by this other girl.
AIBU if I go in tomorrow and ask the teacher to change things around so DD has a different partner?
The bus trip will be about 1 1/2 each way, but it's likely the bus partners will also be roommates that night, and partnered up for the various activities.
DD was already nervous about going, now she's in pieces about being stuck with this bully for two days 