Alien-ness is relative: Susan Rennie, Kat and Doug on Planet Fankle. Scotland, Itchykooo: 2002.
"Fankle" is the Scots word for crooked or twisted, and this entire book is written in Scots (a dialect of English but don't say that in Scotland).
Kat wakes on her birthday to find a cyberdog by the bed, but Dug is much smarter and more interesting than most cyberdogs. When he goes looking for space worm holes she follows him, and he shows her a map. It turns out that her bedroom is a worm hole roundabout.
What follows is a short exploratory adventure to the Planet Fankle (by accident--Dug is as good at navigating as The Tardis).
The tale is warm, funny, not terribly demanding but is told with a casual air that puts to shame many of the more complicated tales I've read.