Sorry about Ethel
She had a good life with you! Like Tigerlily said, you have her babies too.
I remember when my favorite cardinal died, or stopped coming to the feeder. I was sad, and then his "son" from the summer before came, and is still coming to my feeders. How do I know it's my favorite cardinal's "son"? I remember when the father cardinal brought his "son" to my feeder for the first time! They both had a large gray fuzzy patch of feathers under their left wing!
So, you have Ethel and Fred's babies, and soon (maybe?) you'll have the grand "fry"!