AIKO 愛子 愛 ---> love 子----> child (Just like it a lot =3)
But you didn't want her name to begin with a consonant so ...
I really like Chou, it has got something catchy (just my humble personal opinion) It means butterfly (one of the rare words I did know lol).
With help from the site:
Behind the Name: Japanese Feminine Names
It's a handy site and I checked if they were correct (the ones I liked). I hope it helps.
Edit: I especially liked Kaori too for her, it means "perfume"