Mum with ‘sleeping beauty syndrome’ slept through giving birth to her son

Is This even possible so it seems ,as this woman has no recollection of the birth of her son because she slept through it.
Jody Robson, 24, from Birmingham, falls asleep for up to 11 days at a time and can take weeks to emerge from her slumber.

Although she has not been formally diagnosed, Jody believes she has Kleine Levin Syndrome (often referred to as Sleeping Beauty Syndrome), a rare neurological disorder which leaves sufferers unable to rouse from sleep for days or even weeks on end.
Jody’s episodes are so severe that she has no recollection of several Christmases and even slept through the birth of her first child.
The mum-of-two said: ‘One moment I’ve closed my eyes and the next I’ve woken up and it’s two or three weeks later. I’ve missed holidays and my sister’s eighteenth birthday because I was in an episode.’