[contentcards url=”https://nypost.com/2024/09/13/us-news/florida-mom-catherine-griffith-shared-eerie-final-photo-before-she-was-allegedly-stabbed-to-death-by-son-collin/” target=”_blank”] By Shane Galvin The Florida mom allegedly stabbed in the neck by her knife-wielding teenage son over the weekend posted a haunting final message…