Not possible with a child as old as this one was.She would’ve been 11 months old over last weekend and most likely already strong enough to be pulling herself up to walk.I more believe the Mom lost it because she was drunk and either hit her too hard or shook her....
I can think of a dozen things that could have befallen this sweet baby if mother was "out of it." You just can't take your eyes off them for a second, even while in full command of your faculties.