Oh M....that is so difficult to see such a model student get a harsh punishment.
But, please let the school take care of it. I think legal counsel is over the top in a one day suspension if she in fact did what she is accused of doing. Don't minimalize what she did.
She (and you) needs to see that simply having good behavior 99% of the time, outstanding grades and involvement in extra curriculars does not warrant special treatment.
This one time suspension might be what she really needs to keep her from committing a more heinous act in the future. I don't know what she did and I don't know her, and I don't need to know what she did so I am just throwing this out there. This might just be a little dose of reality to keep her from dabbling in offensive behavior in the future when the college world and all its splendor opens up to her.
I am so sorry. It does make our M. heart ache at times to see our kids make poor choices. But, we have to let them see the consequences to their actions. It hurts in the moment to watch them endure it...but they usually come out stronger and more focused on keeping their slate clean in the future.
My gut says to let it be. She is a model student without a rap sheet. I can't see this muddying the waters for her future if she learns her lesson and is squeaky clean from this day forward. She needs the support of teachers to write her letters of recommendation. It will make her more glowing in their eyes if she pays the price and is repentant.
I have seen parents cause a ruckus at school and it really gets teachers and the administration's feathers ruffled. She is at a crucial year in school..she doesn't need ruffled feathers. Usually when parents are on board with siding with disciplining where it is due, then the teachers and administration will be on your side the rest of the time.
She did the "crime"...let her do the time. It is only one day. Have her work her butt off today and show she has remorse then go back with her head held high and make the rest of the year her best yet. Don't drag it out for her.
But..if she swears that she didn't do what she is accused of doing then for sure...I would fight the good fight and nothing would hold back this M. bear!
Good luck and best wishes!!