Historical Fiction: Irish girl Joins the Gold Rush

This was a book I read in Highschool about a young Irish peasant girl during the potato famine who gets sent to Australia on a prison ship to serve some noble family as their servant. Later she runs away to join the gold rush, and ends up signing up with a theatre troupe. That's about all I can remember about it. I'm looking for the title.

Bridie's Fire by kirsty Murray?

That's it. Thanks a million.

You're welcome.