In her new life, she is the daughter of the Duke. She is currently 6 years old and lives in a European country  ( accent not required). 

Because of her previous life, she is impulsive, highly ambitious, and often times sounds more mature than her physical age. She is very expressive, physically and verbally (please have a very energetic, enthusiastic, or passionate voice)

I imagine her voice being very sweet but childlike. She may have the voice of a child but she is an adult on the inside, so some of her maturity leaks through.  I might accept a higher pitch voice, but it depends on the portrayal of her character. I don't imagine her voice super high, but if done right, can be acceptable. (if you can do adult Isabella too then please send it in too)

Her lines will include a lot of narrative and monologue, so please be prepared for that.