CB, in my mind the email approach is rather feckless. If you know this person, then you should simply speak to her, face-to-face. Your obvious diplomatic skills should make this a pleasant encounter, totally educational and life-changing for the hollering lady. But simply firing an email to the youth soccer site for her to stumble across when she next orders emails will in the end help nothing. If I were a board member on your region's board, I'd make sure you were a former board member/referee instructor/referee/grass mower for utilizing email related to the organization for this purpose.
Maybe if we spent less energy on childish "getting even" activities and just rode we could drop a degree or two of the stress levels this constant being offended creates.