She likes Tokyo Mew Mew... so she's probably into "girlier" anime and shojos.
Here's some suggestions:
-Sailor Moon -Shugo Chara! -Peach Girl -Mermaid Melody Pichi Pichi Pitch -Full Moon Wo Sagashite -Princess Tutu -Cardcaptor Sakura -Maid Sama -Ouran High School Host Club -Fruits Basket
I put Ouran and Furuba at the end of the listahan because those two are not quite as "girly", as males dominate a good portion of the leads of both casts, but are still very feminine shows as the main characters of both are female.