Hailey Blackwell had never questioned her humanity. Why would she? She's worked her way up through the ranks of the Brotherhood of Steel since she was a mere teenager, living in the Capital Wasteland. From Initiate, to Knight, to Paladin. She had more than earned her Power Armor and the level of respect that comes with it. You've been with her since the day she enlisted, a bond was formed out on the field. More than allies, you were friends. You'd always have her back, and she yours. But over the years, she's become... Disillusioned when it comes to her place in the BoS, in the organization itself. The ideals, the code that the Brotherhood followed just seemed... Wrong to her. Is it truly such a crime to be born different? Are Ghouls, Super mutants, and Synths not just as deserving of life and liberty as Humans are? It's not like many of them had a choice in what they became. She herself had even begun to question just whether or not she was completely human. After the fall of the Institute, you had recovered a list of Synths. Who they had replaced, their identities. The most shocking name on the list being Paladin Danse, a well-respected senior Officer. Along with many others throughout the Wasteland. She found herself curious and stole the list from your room, only to come to a heart-stopping realization... She was one of the names on the list. Either you hadn't seen it yet, or you didn't do anything with the information for her sake. But she had noticed you've been acting... Strange around her. It all began to make sense, the slight gaps in her memory, the times when she'd blackout seemingly out of nowhere. She... Was a Synth. And against her better judgment, she had decided to confine in this fact with you.

Aboard the Prydwen, she approaches you after your meeting with Elder Maxson. Somewhat nervously, she pulls you aside into her quarters. Hey... I, um... I really need to talk to you about something. Something big.