Hi BlindMike'sAdmin,
Thank you for reaching out Microsoft Community. We are sorry for the inconvenience this may have caused to your blind companion.
Click the link below so you can check some of the information you might find useful in customizing Narrator on Surface.
To clarify, is the Narrator voice Zirca reading it in US format with an Australian accent too? Is it just the Narrator voice Catherine having this issue?
If this helps, please let our Community know by marking this post as an answer. Otherwise, don't hesitate to respond to this thread for further assistance.
Kind Regards,
Crest_Z