A McDonald's employee posted an unhinged Instagram rant accusing her manager of bullying her a day before she allegedly stabbed her to death. Afeni Muhammad, 26, is accused of stabbing her manager Jennifer 'Jamma' Harris at least 15 times at the Detroit area McDonald's on Thursday after she was sent home over her performance. Just a day before, Muhammad had taken to social media to express her rage at being sent home early two days in a row. Tap the link for the full story on DailyMail.com. Link in bio. 🎥 Instagram / officialrisenphoenix #news #mcdonalds #crime #murder