I waffled on the idea for the last couple days, as I am staunchly a work-it-out-yourself sort of parent most of the time.
But Lane’s struggling. Emotionally, physically, socially, with the estrangement from the girl that I think was her best friend at school before this. Lane has a strong personality, so I imagined from the beginning that she might be a polarizing figure — the girl that other girls love, and/or hate. I sort of mentally prepared myself for dealing with that. I guess I didn’t predict Lane’s reaction to it. Playing sick, changing her preferences, begging me not to send her to school. Her heart’s aching, and so is mine.
So I emailed her teacher. Just in a friendly heads-up sort of way, and seeing if she’d be open to doing a bit of mediation with them. I’m still not sure it’s the right thing to do, and we’ll see how the teacher responds.
Ugh.
Ramblings of a pseudo intellectual 
I think bringing in reinforcements is a great idea. I remember when we were kids teachers WERE involved. I think you will find Lane’s teacher is already aware of the whole thing & being reinforced by YOU will make all the difference.
Good Luck!