This is very nice. Considering how Misty usually treats Psyduck, it's really neat to show her actually showing the duck some love. I can't help but think that she does care to a degree, otherwise she wouldn't have kept him around as long as she did.
Aw, this is so CUTE. I've always understood that Misty loved her Psyduck, even if she never intended to capture him when they first met. And while I do enjoy the new folks in the Black and White series of Pokemon, it would be good if Misty returned to the spotlight sometime - she was a fun adventurer (and Gym Leader) to watch.