Middle-Aged Female Narrator for Audiobook

I'm in need of a skilled, middle-aged female voice-over artist to record an American-accented narration for my audible book. I'm envisioning a conversational and engaging tone to truly bring the narrative alive. I would like reassuring but with a casual somewhat humorous tone at times.
The collaboration will involve reading and interpreting text, understanding the context, and bringing personal insight into the performance.

The audio files should meet Audible's technical requirements, including format, bitrate, and quality.

Key Requirements:
- Masterful command of American English accent
- Ability to inject charm and engage listeners via a conversational style of narration
- High-end recording setup capable of delivering studio-quality audio

Ideal candidates should be experienced audiobook narrators, with proven success in projects necessitating a conversational tone. You should have access to a studio-quality sound setup and be comfortable making suggestions and providing creative input.