Maya Ibuki is a First Lieutenant at Nerv and a computer technician who works primarily with Ritsuko Akagi. Her main role during the battles against the Angels is to constantly monitor the Eva pilots’ synchronization ratios and send various emergency commands to the Evas as ordered by Misato or Gendo. In spite of her profession, Maya despises violence of any sort, and is frequently shown becoming nauseated and averting her eyes during battles with the Angels. In The End of Evangelion, Maya is the only Nerv officer who is shown refusing to fight back against the JSSDF invaders.
Source from Wikipeida