The Rovers Ladies goalkeeper watched on from the bench as Northern Ireland lost 2-0 away to Group 3 leaders Iceland, before being handed a starting spot for the final fixture at home to Belgium.
At a rain-soaked Windsor Park, Krystal kept the Belgians at bay for over 75 minutes, but was powerless to prevent the visitors from scoring twice late on to secure the win.
Northern Ireland end their UEFA Euro 2013 qualifying campaign fourth in the table with 11 points from 10 games.