not as recompense
that was a fund drive set up by someone else.
if your house burns down and a fundraiser nets you a boatload of money, should your insurance company not have to pay?
(Somewhat bad analogy, but an analogy none the less)
Was she using the schools Twitter account?
How many followers does the account have?
I think the case could be made that she affected the business. The extent of the effect could be argued but not the effect itself.
especially if it was the school account.......settlement written all over that
You have to prove injury or loss, based solely on that tweet.