One of the Foretellers.

Ava is a kindhearted individual whose youth enables her to befriend the members of not only her Union, but others as well. Despite her young age, she is prudent and diligent in her role. She also displays a more childish side, as she is openly infatuated by Chirithy.

Ava already has a voice in the Back Cover game so I would recommend to have the audition sound as close to the original voice actress as possible. https://www.youtube.com/watch?v=tyQepyoK37k (skip to 1:55 to hear Ava)