I have a save for all 3 paths (I'd had to since I wanted to explore the other 3 LI's)
Regarding "neutral" / Friends path, I don't think so, then how I understood, she feels guilty about but on the other hand she feels good because she stayed true to her (this is personal guess:vendetta)principles.
I fail blatanttly to see the manipulation, and on that path (at least in my playtroughs) MC does not really love her either, hence he is flirting with other girls. That the friendship took a strain is out of question though.