Thread:VeryUnknownFan/@comment-24152851-20140420055301

Well even if Zoey finds Sierra weird, I think Sierra likes Zoey enough for it to at least be a one-sided friendship.

And while Zoey does have reason to be annoyed with Sierra, she still tolerates her enough to help her. Compare with her relationship with Dawn; she is fully creeped out by her and never tried to help Dawn. But with Sierra, Zoey is still nice and understanding (probably due to Sierra's mental condtion). 