If someone gave me a warning for passing on the company booze fest to be with my sick child (or for any reason really), I'd turn in my resignation on the spot. That's complete b.s.. Sorry that happened to you!
They didn't happen at the same time and it wasn't an official warning. I just get a sense of them wanting me to work more hours and maybe let my wife take care of the kids (she works in the same industry and gets the same pressure). I think they know better than to just say it bluntly, but they are applying social pressure to which I am completely immune. My wife once got a blunt "your kids are preventing you from working the requisite 70 hours" speech from a "friend" who hired her with the promise of being family-friendly. She quit the next day.