The Down Syndrome Superhero 2

This is the second book in a series about Josie, a girl with Downs Syndrome who can save Earth from the Sashimi's vicious attacks. Although the Sashimi are from another dimension, their dark agenda begins to unravel at the hands of Josie and her family.
This is a science-fiction-fantasy novel that sees us visit underwater worlds and alternative universes, all led by the supernatural hummingbird guide, Opal, who can open portals to other worlds with her voice.
Does Josie manage to save the day? Time will tell.