I pretty much made it her thing to kill everything on sight. She bludgeoned the doctor to death the instant I got control of her weapons.
The lockpick was so that I could get into safes and stuff, because those tend to have some pretty good loot.
It really didn't help that I had the NCR Rangers stalking me, and none of my weapons were good enough to do any decent damage. I was finally able to take one out when I circle-strafed and punched her into unconsciousness with boxing gloves.
It was a fun character at first, but quickly became not worth it.