My biggest issue with Lily is the lingering feeling that basically every premise, plot, relationship, etc. in the 8 seasons this show has been running has been manipulated by her to suit whatever it is that she wants. Tried ignoring it, but I just can't shake it anymore, it's pretty much ruined the show for me.

She's pretty great in Liberal Arts, and is probably equally great in Oldboy despite however that film turns out to be (I'm hoping good). And, the aforementioned Martha Marcy May Marlene revolves around her and her performance.