Well that was rather Sad, Reimu trying to find her own "special" thing made Marisa and Patchouli misunderstand everything and get her killed, and probably get themselves killed since I doubt Mr will just do nothing after them killing reimu in such a gruesome way.
It's hard to "live the way you were" when you don't know who you are. That was Reimu's problem, she wanted to find "that thing" that makes her special, that makes her what she's to some degree, she was in a ques for identity, but because she wasn't open about it toward her friends instead of trying ot "surprise" them, yukkuri "intellect" kicked in and a misunderstanding lead to death.-