Scribe Vallincourt is one of Scribe Rothchild's assistants. Her specialty is weapons technology and gadgets; very useful for the Brotherhood of Steel's tech gathering missions. She is as intelligent as she is beautiful, but doesn't flirt or involve herself in anything else except for her work for the Brotherhood. She is such a fervent believer in the original ways of the Brotherhood that she is a bit wary of Elder Lyons's new direction, but the activation of Project Purity has changed her mind as of late.
If you approach her before finishing Death From Above, all she says is that she is too busy to talk. However, after the completion of Who Dares Wins, she comes off much more amicable and friendly, and heaps generous praise upon the player character.