Great thread. I thought I was the only one who noticed that her death was pretty well treated with indifference for the last part of the film.
I agree Bruce wasn't emotional enough except for the penthouse scene. Pretty stupid, considering Dent hasn't known Rachel as long as Bruce has. He should be the one who is more emotional about it, not Dent.
That aside, I actually saw some of Rachel in the prewitt building fight.
Rachel's letter said
"Bruce, if you lose your faith in me, please keep your faith in people"
Both Gordon and Joker were counting on the people on the ferries to blow each other up. Batman should've been the most worried, since he lost his parents to a Gotham citizen, and knows the crime and corruption the city is filled with. Yet he didn't for a second believe the people would actually do it.
Gordon: Every second, those people get closer to blowing each other up!
Batman: That WON'T happen.
---------
Joker: We really should stop this fighting, otherwise we'll miss the fireworks.
Batman: There won't be any fireworks!
I know Bruce didn't actually READ the letter Rachel gave him, but her letter foreshadowed the Ferry situation, and Bruce didn't lose faith in the people of Gotham, which is what led to the Joker's capture. So in a weird way, Rachel's part of the scene.
Also, the next Batman should revisit the 'arrowhead' thing from Batman Begins. It was such a big part of the story of Begins, that i'm suprised Batman didn't pull out the arrowhead after her death in TDK..