(Sorry for any spelling, grammar, or drawing mistakes)

One, When push comes to shove, Lake can be very amoral, and this is a day-one foundational character trait; she’s extremely, worryingly willing to horribly screw over bystanders and strangers when she perceives herself as being cornered. She left an elderly man to fend for himself outside the train without a number, tried to steal someone else’s number with all the consequences that would entail, and was introduced trying to trap Tulip in the mirror world for a bid at freedom. It’s a combination of luck and ambiguity of outcome that keeps her kill count as low as two people.

Two, Jesse does not know this, and was not around for any of the genuinely terrible things Lake did when her back was to the wall. At most, he got an inkling of ruthlessness in the toad car and the parasite car, but circumstances in both situations would have taken the edge off that.

There’s some deliberate thematic significance to the fact that Lake only does shitty things in the absence of Jesse- when there’s a single other person capable of human speech in the mix, your options balloon and nothing looks as desperate as it might have otherwise. But I think that this lends itself to some fun dynamics in situations where they stay stuck on the train long enough for something to go wrong for with both of them present at once, or even in a post-train situation where shit hits the fan in some other capacity- anything that gives Jesse a more comprehensive realization of what it means not even to be Lake’s enemy, but to be in Lake’s way.