I love the characterization you have here! You squeak in some places and really play with the pitch and it works really well for Nao. I am getting a bit of interference with your audio and my recommendation would be to check your takes before you finalize them. However, your variation is great! I really like what you're doing here!
Yeah, I think I just need a new mic for that lol. I can always try with my phone on a later date. Maybe just an ABC voice read to see if any audio quality is better :)