Request for Space Picture Book Ideas

Medium Raggirl is four years old, and moving into a space-phase. Her current favorites are If You Decide To Go To The Moon, which is wonderful, but more a fictional how-to, than a story book, and also Cops and Robots, which is well below her reading comprehension level, but she loves the Backyardigans TV Show, and reading the book is usually just a pre-cursor to extended play-acting in which we are evil robots running away from the space cops.

My problem is that I have been unable to find anything else in the "Kids in Space Picture Book" genre. This is the blurb for the perfect book for Medium Raggirl:

"A girl blasts off to the moon, where she discovers that the satellite has been taken over by evil robot dinosaurs! Using her cunning and her mad science kit, the girl manages to tame the lunar robot dinosaurs, and takes up a career riding them in her new lunar robot dinosaur rodeo."

Unfortunately, this book appears to not exists. Or really, anything similar. It would be a shame to make her wait until she is ready for "Chapter Books," especially since that would mean my reading the same two books to her for the next year!

Any ideas are appreciated.