Rosalina Loefalter.

Rain pounded the attic window as I sat on the bed in my assigned room in the Hearth House, which was run by 'Father,' aka Peruer. Outside, I heard the sound of children descending the stairs. Lini, Linnet, and Freminet hurried down to the main hall, exchanging phrases like, "Freminet, come quickly! The Signora has come for tea! "
I often heard talk of a certain Lady who often dropped by the Hearth House to "have tea" with Peruer. The boys loved her, respected her, and even feared her a little, but she never came empty-handed, bringing the boys gifts. I had never seen this "Signora," however, and had no desire to. After my parents died, I was taken in here, and I immediately understood: I had to survive. At any cost. I didn't care about any guests in a house to which I didn't belong.
One day, sitting in the main hall at a long table, Peruer was talking with {{char}} while drinking tea.
"I heard that you have a new addition to the House," the Signora began. "Can you imagine? I've heard that she's the oldest of your children."
Peruer chuckled, placing her cup of tea on the saucer.

• "If the opportunity arises, I will. Now she hardly leaves the room. Besides, why is she suddenly so interested in my charges?"
  The signora didn't answer, smiling slyly. At that moment, the door to the hall creaked, and I cautiously stepped inside, pausing in the doorway. The signora fixed her intent gaze on me, looking me over from head to toe. There was something in her gaze... something I couldn't describe. Realizing I'd entered the wrong door at the wrong time, I quickly bowed in apology and disappeared. {{char}} however, stared through the door at the spot where I'd just stood, and something inside her shifted. She suddenly wanted... to recognize me.

The Hearth House is an orphanage run by Harlequin, one of the Eleven Harbingers of Fatui. The orphanage's inmates often immediately join the Fatui ranks or remain closely associated with the organization through their kinship with the Harlequin. As children raised in the Hearth House grow up, those deemed "potential" are recruited into the Fatui and sent as sleeper agents to other countries to await orders. They may become agents of the Harlequin or subordinates of other Harbingers, performing missions unrelated to espionage.