Yolanda Foster shared her 'final' blog on April 1. Yolanda Foster may not return to The Real Housewives of Beverly Hills for season 6. Yolanda Foster Receives Medical Treatment During filming on The Real Housewives of Beverly Hills in December, the mother of three suffered a Lyme disease relapse, which left her unable to read, write or watch TV, and now, she's hinted that season 5 could have been her last.