If you haven't checked it out yet, take a look at longtime Lister Tracy Van Fleet's endeavor, The Ageless Singer and share their upcoming event with a mature soprano or alto who might benefit.  They have a free, virtual "open house" coming up on August 31, a precursor to their more in-depth course to follow.  Here's the info:

Free Class/Open House at The Ageless Singer!

From: Wednesday, August 31st 2022, 5:00 PM PDT

To: Wednesday, August 31st 2022, 6:00 PM PDT

At The Ageless Singer we use principles of The Alexander Technique to help find freedom in our singing! Women who are experiencing voice changes due to hormone change often keep trying to do what they did in the past. We address this and other voice related issues for those of us in the 2nd half of our lives.

Join us on August 31st for our Free Class/Open House and experience how we put this into action.

This is also a great class for anyone who works with women over 50, in their choir or studio.