The way I read it was that Blink would open and close portals almost instantaneously so it looked like she was slicing and dicing. So when she opened up multiple portals it would displace thin pieces effectively being all ginsu-like.
As to her dating Nightcrawler I can't see that. Physically yeah they would make a cool looking couple but I don't see their personalities vibing that well. Her and Mimic were great and I could see her going for Havok(pre UA). To tell you the truth I think she's way out of most of the X-guys' league.