Nothing needs to change. People just need to practice common sense.
While I'm happy enough to encourage common sense, and concede that many take dumb risks...... I think simply pronouncing that a sizable percentage of people should spontaneously change their behavior, just because
@Bojaxs wants them to is to wish to see this outcome and worse repeated ad nauseum.
That doesn't mean I endorse Platform Edge Doors here, I don't, for a variety of reasons. That said there should be a careful consideration as to whether some design or operating procedure changes may be reasonable to implement. Its not a given that the answer will be yes, but its worth a look.
I'm glad to hear the woman is alive and recovering, but I don't believe her when she says she's "a very careful person."
In the absence of evidence, I think you're drawing a conclusion that isn't all that supportable.
Certainly, she was situated dangerously on the day this happened; but its also apparent that she's been a daily commuter here for sometime, possibly years, and yet she's never been hit before. So there is certainly the possibility that her position on that day was out of the ordinary for her.
When you walk up the stairs onto the platform you are physically standing in the middle of the platform. You are at no danger of being struck by a train. At this point you take note of how crowded the platform is and change your habits accordingly. And yet after walking up the stairs and standing in the middle of the platform, this woman still felt compelled to walk towards the edge. Why???
Lots of reasons.
Most commonly, because you'd like to find a less crowded area of the platform on which to stand, and to get out of the way of the stairs and entering/exiting passengers. But you may also be seeking a seat, or positioning yourself in front of a car where your more likely to get a seat.
The suggestion that all passengers should crowd around the top of one or two sets of stairs is not only unreasonable, it is, unto itself dangerous and likely to create dangerous crowding conditions.