At 2 a.m., stuck at the office, I checked the hidden baby monitor I had set up to understand why our newborn kept crying - and what I saw left me shaken. On the screen, my mother rushed into the nursery, leaned in, and said, "You live off my son and still complain?" Then she grabbed my exhausted wife by the hair beside the crib. My wife did not scream - she just froze. When I reviewed the saved footage, I discovered weeks of mistreatment. She thought I would never find out - until I got in my car and decided her time under my roof was over.