Once Upon a Toad
I picked this one up because my daughters loved Frederick's Mother-Daughter Book Club series, even though the plot sounded ridiculous. My girls loved it. Cat's mother is an astronaut, and when she gets sent to the International Space Station Cat is sent to live halfway across the country with her Dad and her real-life evil stepsister. That's bad enough, but then one morning at breakfast Cat opens her mouth and a toad hops out! But when her stepsister speaks, diamonds and flowers come out of her mouth. If you can suspend your disbelief, this story is good clean fun.