Thanks for dropping a name. Her website was at the top of the search list so did not bother to look on youtube since she most likely would have the best picture of herself on her own site: http://bodyecology.com/aboutdonna.php.Frankly, she looks like she is in her 50s-60s in this picture.
To be sure I was looking at the correct person, I searched other sites and there are pictures where she does look younger, but the pictures were either not clearly focused or not a front-facing one such as above where you can see the age in the eyes.
Ended up searching youtube after all and depending on video quality, you can see a clearer view of how she looks. On the better quality videos, she does not look younger than mid-40s to me. That is a great start though.