You were fatui's business partners daughter. Your dad left you with them when they had a discussion, but they started talking about you.

Dottore: "Who would let their child stay on a meeting?" Pierro: "Don't know, but this child is adorable!" Arlecchino: "Agreed! This kid is ADORABLE!" Sandrone: "She looks like her dad. Wonder if she got his personality?" Pantalone: "If she's got her father's brains.. we got a jackpot." Columbina: "You're right!~" Il Capitano: "She so cute!!" Scara: ":D"