I have no sympathy for the woman, and you definitely have nothing to feel guilty over.
I've used the Underground since I was four years old, and rush hour is the most God awful thing in the world. It's the London version of Hunger Games.
Nowhere else in the world could you put three thousand of the most civilized people together, and watch it descend into something out of Lord Of The Flies.
I've been shoved, slapped, punched, kicked, spat on, told where to go, and on more than one occasion have even had my parentage questioned (and all by the time I was fourteen).
Oh I've given as good as I've got over the years (and done far far worse than you) and revenge feels soooo good.
Think of this as good practice for you when you go shopping up Oxford Street at Christmas - even I'm not brave enough to face that without my better half holding my hand .
Keep up the good work and we'll make a true Londoner out of you.