Find Collar 12: Christine

 is a quest in the Fallout: New Vegas add-on Dead Money.

Objectives

 * Find Christine at the Villa Clinic in the Sierra Madre Villa, and recruit her as a companion.

Overview
This quest is one of three given to the Courier after completing the quest Sierra Madre Grand Opening!. Speaking from the hologram fountain at the center of the Villa, Father Elijah instructs the player to recruit three companions, including Christine, in order to carry out a heist at the Sierra Madre Casino.
 * Note that the three quests (this one, Find Collar 8: "Dog" and Find Collar 14: Dean Domino) can be completed in any order. Players wishing to pass the various skill checks may want to compare the skill-boosting items found at each quest location before starting.

Quick walkthrough

 * Head west from the hologram fountain and follow your Pip-Boy marker to the Medical District.
 * Once through the door, make your way to the Villa Clinic and go inside.
 * Turn off the shielded speaker blocking your way to Christine by using the terminal in the Clinic Basement.
 * Access to the basement can be gained by picking the lock (Lockpick 75), or by using the key located in a desk on the second floor.
 * Release Christine from the malfunctioning auto-doc, and recruit her to your team.

Detailed walkthrough
Enter the Villa Clinic, either through the upper floor or through the main entrance at street level. It is advisable to set the hologram to patrol the floor the player is not on. On the second floor hallway, by one door, is the computer to set the patrol parameters for the hologram. Set this to first floor (ground), then go to the emitter, which is near the center of the main second floor corridor. (It looks like a lit blue plasma mine). This can be disabled with a Repair check, or the hologram can simply be avoided. When Elijah tells the player to find a way to disable the speakers in the Auto-Doc hallway, move to the basement, the door of which can be unlocked with a lockpick check or a key found on the second floor in a desk (Along with the Med-X dispenser code.). From there the player needs simply to shut down the main power and go back upstairs, go down the Auto-Doc hallway, and activate the Auto-Doc in the last room of the hallway. This frees Christine, who will join the Courier if he/she doesn't have another follower at that time.

The best solution to this quests seems to be taking a very cautious approach, saving regularly and avoiding conflict at all costs. At certain points you will just have to run past an enemy.