Amy Rose is a hot headed but very compassionate girl whom is in this universe, Sonic's girlfriend.  She is often very sweet and girly, but she can be easily angered and be quite aggressive when in a foul mood.  On the other hand, she will do anything she can to help her friends and make sure near everyone is well cared for.  She's around 8 years old in this incarnation.  If you are to use official voices for reference, I recommend Jennifer Doulliard from the Sonic Adventure games and Sonic Heroes, or Lisa Ortiz from all Sonic games from Shadow The Hedgehog to Sonic and the Black Knight.