I went to see for myself. Sure enough, One-eyed Wanda was there basking in the sunlight on a breezy and cool spring day. I felt concerned for her being perched out in the open like this and not flushing as the people came in and out of their house just mere feet away from her. I worried that she was not up at the nest tending to the owlet(s) keeping it warm and protecting it from being blown off the tower or from being eaten by hungry and nest-coveting Red-tailed or Swainson's Hawks. She seemed lethargic...if you can describe day-time snoozing Great Horned Owls as lethargic. I wondered if she was sick or if the nest had failed.
The bird of prey rescue lady I called about my concerns sagely suggested that we just watch her and that she was probably all right. I decided that if she was still there the next day, I'd be more concerned.
The next day was a cold, windy, and rainy one. It was midday before I could check on One-eyed Wanda and her nest. I am happy to report that I found Mama on her nest and the owlet as fluffy as ever. Phew!
I suppose moms of all species just need a day off now and then.