The Traveller's Telescope: A Ruby Rosemount book

Ruby Rosemount's adventures continue in this sequel to The Magic Carpet.... While Granny McQuirky is using her traveller's telescope to visit Hidden Valley, Ruby's house proud mother gives it a polish and knocks the settings out. Ruby and her friends try to correct it, but accidentally zap the next-door neighbour Mrs Pinkus and her poodle into another world. When they follow to retrieve Mrs Pinkus, they bring back more than they bargained for unleashing a threat to the genie world. Granny McQuirky is accused of the resulting crimes. If Ruby and her friends don't find the real criminal, Granny will be sentenced to life in a bottle. To make matters worse, a mysterious enemy is threatening Ruby's life.