I LOVE shooting into the sun and I never use my lens hoods partly because I like the look of flare, so beware! These might be considered highly controversial "tips"
Here are some tips you might find useful:
1) The camera has lots of trouble focusing when the sun is within the frame, so either manually focus while you're shooting, or lock focus on a point where you know your daughter will hit (like a break in the pavement) or (my favorite) hold your hand up so that the shadow falls over the camera and then use focus points to pick and lock your focus (I don't have the K10D, so someone else might have to talk you through how to do that if you don't already know).
2) Use a low ISO, but I think you've already picked up on that
3) Use spot metering
4) If the K10D has this option in the menu (and I'm almost sure it does), try tying your AF point to the AE (auto-exposure) point. That means (if I understand this right) that if you choose the bottom right hand auto-focus point, then the camera will choose the settings you need to expose THAT POINT correctly (and not that bright sunlit area!). Otherwise you might end up with deep shadows or silhouettes.
5) I don't use flash for my shots. Instead, I overexpose like mad - sometimes up to +1.7. Of course, if you find settings that work under those lighting conditions, go ahead and switch to Manual mode and put those settings in yourself. Then you only have to worry about getting the focus right.
6) The smaller the aperture, the more star-like the sun will look. For instance, this shot was taken at f/11:
Still, your primary concern should always be getting the exposure you want and getting the shot in focus. For a small child, you will almost definitely need a shutterspeed of at least 1/125th. If you have to decide between dropping below that or using a larger aperture, I'd choose the larger aperture.
I'm afraid that I very rarely post pictures of other people's kids online, but I do have this one to indicate the technique:
If you have any other questions you think I might be able to you with, please feel free to drop me a line!