Fair play to her, it still baffles me how she was left un-noticed by anyone, but as we now know its an ERJ-145, where the stairs are integrated into the door, she would have seen that she could have got off the aircraft if she opened the door, which the crew tell you how to do, its even on a piece of card!
Even if it was a huge aircraft, such as a B777, she could have opened the door and realised that yes, the slide may not deploy even with her pulling on a toggle, but it would have then occured to her to leave it open to attract the attention of ground workers.
The Airline left her there, that's true, but she's turning the whole thing into something much bigger by probably purposely not making any effort to get out. If she really felt so distressed she would have bothered to try and do something, its not hard to work out, its common sense.