Thank you all for the well wishes. It will be tough, but I have to deal with it with baby steps. Step #1: get her out of the Emergency Department and into the hospital proper (waiting for a bed).
@Mandikay, I hear your anger. Several years ago, there was a girl in my daughter's grade who picked on and bullied a different girl what seemed like every week. The school got numerous complaints about her, each from the parents of the girls being picked on (ourselves and my daughter included). Each time, the school would bend over backward to avoid a suspension and labeling an incident as "bullying" because of all the awareness around it. Apparently, when bullying is reported, it impacts school scores (and funding), and no school or school district wants that!

That said, the school should have made allowances--and you should point out to them the consequences of their actions, such as:
1) Nothing can make up the school time lost by your daughter--whether or not the school stands by its actions.
2) Further, by suspending your daughter, the school has just singled her out. Everyone in the school will know (duh, kids talk!) and the stigma attached to such an action could follow her for years.
3) This is a safety issue. A student of the school did not attend class because SHE FEARED FOR HER OWN SAFETY. If the school and the district are unwilling or unable to provide a safe learning environment for all students, perhaps that status should be made known to others within the community. After all, wouldn't other parents wish to know that their children might be at risk?
Best wishes with the whole affair! I know that I would be livid if it happened to my daughter.