hmm, i not a girl but i know one or two cute games.
try these:
Princess Debut DS
"You step through a portal into a magical world where you’re a princess! Can you master your dance moves and woo one of the six handsome princes in time for the big ball? Its part rhythm game and part adventure game."
Super Princess Peach DS
"Play as Princess Peach, out to rescue the Mario Bros! Whack Bowser's minions with your parasol; peach channels vibes into special powers. Float through the air when she's happy, burn through walls when she’s mad, or make vegetation grow with her tears; run, jump, float, and fight through eight worlds to find Mario."
Harvest Moon DS: Cute
"Has Forget-Me-Not Valley lost its magic? You're a late-blooming farmer, but the Harvest King doesn't have patience for girls who play all day! That's why he weeded out the Harvest Goddess and the Harvest Sprites, leaving you out standing in your fields. Break his spell by sowing seeds and finding the Harvest Sprites. You'll need to master planting fields and tending livestock. Perhaps a handsome bachelor will help you before a mysterious thief steals your heart!"
* Raise Cows, Sheep, Chickens and Ducks!
* Change clothes and decorate the interior of your house!
* Court and marry local guys or invite over favorites from
Harvest Moon®: Friends of Mineral Town!
Ham Taro DS: Ham-Ham Challenge
"Join Hamtaro and all his friends in a variety of fun and educational brain-training games designed for elementary school children. Children will develop their memory, word comprehension, math skills, and many other abilities as they play through 12 engaging, interactive games. Parents can monitor their child’s growing abilities, adjust the difficulty level to match their child’s skills, and reward them with special items. Hamtato and his friends make learning fun!"