It would depend if you lost any money. In other words, what's the harm to you? How have you been damaged other than your pride or hurt feelings? Since it was for a fundraiser and not for commercial means, it appears that you did not lose any money or have a reason to sue her. Lawsuits are to repay someone for money damages. The courts do not award any money damages for hurt pride or feelings.
Answered on Jan 08th, 2021 at 10:01 PM