But if the slide doesn't deploy when you open the door (because it's not armed) you pull the toggle to release the slide.
The crew mentions pulling the toggle if the slide does not deploy in the safety briefing, and the cards point it out too, so there would have been little excuse if the said Woman opened the door and the slide did not deploy automatically.
If you don't listen to the safety procedures because you are distracted by looking outside, reading, sneakily listening to music or sleeping because you have a "nothing will happen to me attitude" then you have no leg to stand on if something does happen and you try and blame the Airline for what happened.
And in order to pull the toggle to manually inflate the slide, the slide has to be ARMED in the first place.
The arming of the door connects the girt bar on the slide to the brackets in the floor so that when the door is opened the slide gets pulled out of the bustle and inflates as it drops to the floor. If the slide is not armed, the girt bar won't connect to those brackets, therefore the slide will not be yanked out of the bustle and will not drop to the floor. If the slide stays inside the bustle then there is no toggle to pull.
The airline is at fault, the passenger is not at fault. The airline failed to carry out it's security procedures, the passenger should not be expected to open the door herself (in darkness as I doubt the cabin lights would have been left illuminated). And even if she had managed to arm the door, inflate the slide and get off, she isn't going to get inside the terminal easily as the aircraft may have been parked up around 1mile from the terminal building on a remote stand - and she would probably have been arrested for being a terrorist for being in the restricted zone without a hi-viz jacket and ID!