I found her walking along the road (east to west) into Krasnostav, towards her parked red car. That was on a save that I had to restart though because of some issues with destroying the main camp.
Now though I can't find her... it doesn't help that the UAV crashed in Krasnostav right on top of her nice red hatchback.
Speaking of which, why the hell do the UAVs crash all the bloody time? It does my head in.
EDIT: Okay, I found her returning to her home town, albeit on foot. I've spoken to her but for some reason I can only get as far as "I guess I have no choice" and then the conversation ends. What should happen is Coops should radio the Captain and then he should tell Coops to go to the extraction point and what-not. Now that the conversation remains completely inactive there's no way to carry on the mission. Fantastic. Time for another restart I think... or time to skip the mission all together more like.