Kaya scouted ahead and it looks like the coast is clear for now.”— Search party log #1
Kaya is a member of the search party that was Searching for Cheryl.
She scouted a park for signs of Cheryl, and could not find her. After the BOS scout assisting her was killed in action, she refused to go any further and headed back to Canterbury Commons, leaving Manny on his own.
Kaya is only mentioned in Fallout 3.