To absolutely no one's surprise, I'm going with the interpretation of Death's removal from the DC Universe that I find funniest

Namely that what's on the train IS only a piece, but she's gong to initially think that they did manage to remove her entirely and cause utter chaos with regards to the nature of reality

But actually that's all Wally West's fault

Because her canonpoint is "I don't wanna deal with Flashpoint and the New 52"

Barry Allen's fault thank you very much

The executive decision he had to come back lead to flashpoint.

... yes you are correct, Barry Allen, I apologize to Wally, he is a sweetie

Anyway, the important part is that I'm going with the option that is REALLY FUNNY

Are you taking the decision that was explained to me by Dan Jurgens too?

eh?

Booster Gold became the waveforce that controls time because he was really pissed off at the Flashes for being so irresponsible with time travel. Which is also why things were so confusing and screwed up. He didn't know what he was doing.

Its more complicated than that, but I had a talk about where Booster was with Dan after the whole.... Mess.

That probably won't come up with a five mile radius on interactions, but it's interesting

And honestly, discussing time in the DCU is... Well, Death is probably one of the few who could wrap her head around it anyways