Corporal Betsy.
Initial Perk, Cherchez La Femme Betsy Style: 15% additional damage (vs normal 10), and dialog options are a lot more sixual in nature. Shown as "[Betsy says] text".
Upgraded Perk, Black Widow Betsy Style: +15% damage (vs normal 10) to opposite six foes. Behavior removed as she is now mentally healed.
Behavior, Fiendish Frenzy: When a Fiend is spotted (Cook-Cook "did" her), she will charge into them with 200% firing rate and 50% hitting rate.
Weapons: Some kind of marksman rifle (default is ranged), with a pink Double D as a close combat *highly* special weapon (think GTA style
). Fits her story actually
Longer questline to get her healed (The Curator?), and as deep in character as Craig Boone. Initial quest to make her able to join, is to find the root of her problems rather than having them laid out. During her mishap with Cook-Cook she was able to fetch the key to his throne room, which may be the only way to get to him. Once he's taken care of, she takes leave of absence to seek treatment, and this is where we come in. A much more gruesome story is revealed over time as she gains trust with us. Something to do with recorded holotapes and snuff, and a building of torture where of showing evidence of bizarre happenings of "sixual" character which you have to clear out and set free the remaning "clients". Pretty gross and morbid, I know, but plenty of depth.