Mystery Solved!
One day in early April 2017, I got an email from my PayPal account notifying me that someone had made a monetary donation for one of my photos from my Pixabay.com account. I tried to figure out the donor’s contact information, so I could send a “Thank you”, but the data’s not available from either PayPal or Pixabay. I searched for about an hour, then gave up.
Sunday, 10 September 2017, while my husband Mark and I watched Hurricane Irma coverage on The Weather Channel, I tried again and found… her. My first Pixabay donor.