Not girly I know, but you say she likes bugs. I made a bug cake once. Made it log shaped, covered in choc fudge icing, and decorated it with stuff like, foil wrapped ladybird, sweetie snake from Woollies, spider made from black paper, and other assorted insects which I can't remember now! I added a sugar mouse at the bottom. Think I used a chocolate swiss roll for basic cake. Made icing swirly like a log.