I agree, but I think on the boat Lara is better at spinning her narrative than Tzarina. And Tzarina made the mistake of admitting she did it to get under Lara's skin, while Lara pretends everything she does is for 'righteous' reasons and won't admit to what she's doing to Tzarina.

I am guessing because it comes out that Tzarina admitted she made that "slept late" comment purposely to make Lara mad. Even though Lara is clearly also trying to provoke Tzarina, but she probably doesn't a admit and does a better job covering her tracks with the rest of the crew.

I'm very glad that there is data to back this up, and that is important, but a lot these conclusions could have come from actually talking to anyone who uses transit regularly.