Here's Rich Johnston's minimal summary:
Peach Momoko - Too Popular For New York Comic Con? (bleedingcool.com)
Additionally, from what I'm hearing:
-The crowd was comprised heavily of WhatNot sellers and other social media-centric vendors
-Some fans were wilin' out both in line and directly to Peach herself, creating security concerns
-Peach eventually had enough and cut the signing short
-She has no plans to return to a convention here possibly ever again*
*Update: this appears to not be the case, as she mentioned on her Facebook page that she will still attend conventions in North America again albeit with some new rules and restrictions in place