You were right! The dragonfly we watched emerge this morning turned out to be . . . a female . . . Widow Skimmer.
First, the wings threw me off and I thought Common Baskettail. But I knew the abdomen tip didn't belong to a baskettail.
Then the color threw me off. I thought Lancet Clubtail because of the yellow stripes on the thorax shoulders and sides. But the body was too thick, and later I remembered that the only clubtails I had seen emerge were on rocks at water's edge. (They are ground and rock perchers, after all. Duh.)
After you left I stayed for another half an hour or so, and slowly the truth revealed itself.
I hope you enjoy these photographs and your detective work. Good job!
PS Let's do it again sometime!