This young lady is in great form. She's been up in the hills building up her egg supply; now she's returned to the pond -- likely the same one from
which she emerged a week or two before (who can be sure?) -- fully mature and looking for a partner. There were only a few males around but that's not a problem.
If she wants to be spotted by a male she will be -- dragonflies have the best vision in the insect world -- males can spot a potential mate at over 30 meters.