I am pretty sure the book was very near the Rubinstein ones, so it might have been, but wanted to know if it rang any bells for anyone. Kidnapped from an Australian train station, Joella, Peter, and Liane are taken on a rocket to the Galax-Arena, where children stolen from Earth perform death-defying stunts for the amusement of the inhabitants of the planet Vexak. I thought for a long time it was 'Galax-Arena' by Gillian Rubinstein, but don't remember all the circus stuff, although the wiki synopsis does mention aliens taking human children as pets. Also, the scientist and the girl could talk to each other. It was written by the award winning author Gillian Rubinstein (also goes by the pseudonym Lian Hearn) and was. The most striking thing I remember was that the gravity was heavier on the planet she was taken to, and so she talked about how she felt dragged down and heavy. Galax- Arena is an epic tale combining both real-life and science fiction elements alike.

He would take her for walks on and off leash and if she was obedient and came when called, he'd give her greater freedom. Conveyed from the viewpoint of both Joella and her brother Peter, the three escapees are still haunted by their past experiences at the Arena. Kidnapped from a train station and taken to the distant planet of Galax-Arena, Joella, Peter, and Liane are forced to perform dangerous tasks as slaves to. He was being kind to her, but was still studying her. Sequel to Galax-Arena: the story of how Joella, Peter and Liane deal with life on the run from Project Genesis Five. Kidnapped from an Australian train station, Joella, Peter, and Liane are taken on a rocket to the Galax-Arena, where children stolen from Earth perform death-defying stunts for the amusement of the inhabitants of the planet.

It was a sci fi novel where a human girl (I think) was taken as a pet by an alien scientist. I read it in the primary school library approximately 10 years ago so it definitely had nothing sexual in it. I've had this book in my head for ages and no Google search has found it.

Galax arena by gillian rubinstein