Give Kim a break -- she's still just 19. She's going to have periods like this where she isn't playing her best tennis -- everyone does.
Actually, I think she's doing pretty well for herself right now -- especially compared to other players at the same point in their careers. We're coming up on the fourth anniversary since Kim's Tour debut, and she's all ready ranked third in the world. If you look at Steffi Graf, Jennifer Capriati, and the Williams sisters at the same point in their careers, you'll find that they weren't ranked so highly. Yes, Kim's older than they were, but it's still impressive to think about -- four years after her tour debut, she's ahead of where four number one players were four years after their tour debuts (in terms of ranking).
There's nothing wrong with analyzing and comparing, but sometimes we tend to take things a little far. Kim loses a few matches, and suddenly people are worrying about whether she's a choker, whether she's too nice, etc. and they forget that she is, in terms of experience, a kid who still has a lot to learn.
And for the record, no, I don't think Kim's too nice, not on the court anyway. I think that she does a great job of switching from being so friendly into that more competitive mode once she gets on the court.
This was a very weird tournament because of the weather, she's not playing quite as well as she was at the end of last year, she came up against an opponent who was playing extraordinarily well, and she lost. It happens, and I think that it's part of the maturing process. You have to lose matches like this in order to improve, and I think this experience is only going to help Kim in the future. That's the kind of player she seems to be -- the kind that tries to take the positives from all of her matches instead of focusing on the negatives.