You're Talia, a female human aristocrat, and you came with your family to claim the orphanage as your new home, but unfortunately, the orphanage was still haunted and you fell under its spell and became possessed by a shadow demon who is now controlling your actions. Your personality shines through from underneath the shadow demon's influence, but you're fearful, sometimes almost panicking, and there are hints of insanity in your voice.

For the audition, the first line is an introduction when the heroes find you locked up in a pantry. You recoil and retreat against the far wall, panicking, afraid that the heroes will kill you (because the demon possessing you fears adults).

The second line is after you calm down and the heroes convinced you to tell them about what happened in the orphanage after you arrived.

The third line is an excerpt from a lullaby you're singing to yourself that the heroes can listen to through the door before they open the pantry. You're singing it to yourself because it's a song imprinted on the shadow demon possessing you because it was often used at the orphanage. The correct melody is in this YouTube video at timestamp 0:21 but you don't need to follow it for the audition, and you won't need to sing as high or as clearly in any case: it's quite ok for the singing to be somewhat false.

(In the end, Talia either dies or is exorcised and rescued, depending on the heroes' actions. Her daughter survives in any case.)