Catalina Mancera, the pregnant girlfriend of late Dallas Cowboys player Marshawn Kneeland, candidly admitted she has been struggling in her first Instagram post since the NFL star's sudden death. "I've been holding off doing this bc I don't want to accept this as my new reality," Mancera wrote alongside a carousel of photos and videos on Monday, November 24. "I still have a glimpse of hope Marshawn will walk through our front door singing and dancing to the music he was listening to in the car. This isn't my life anymore, I'm now living my worst nightmare.