You think wrong.people have an inflated sense of their own importance, a deep need for excessive attention and admiration, troubled relationships, and a lack of empathy for others
I think this fits Zoey very well.
The simplest counterpoint would be the fact Zoey eventually stops talking with MC because she's led to believe this would be doing him a favor. That's pretty much the opposite what a narcistic person would do -- an actually narcistic Zoey wouldn't care about doing anyone favors; she'd keep stringing the MC along for that "excessive attention and admiration" you claim she craves.
As for the whole "wah wah she abandons her mother, what a cold-hearted biiiiitch" her mother doesn't appear to actually mind Zoey's decision and is very happy to welcome Zoey back, so you guys don't really need to get out of your way with all that hate on her behalf.