There are 1 book by Michela O'Brien on BookOrb. A strong starting point is Playing on cotton clouds (2012). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Michela O'Brien written?
BookOrb lists 1 book by Michela O'Brien.
Where should I start with Michela O'Brien?
A good starting point is Playing on cotton clouds (2012).
What is the Michela O'Brien books in order list?
In publication order: 1. Playing on cotton clouds (2012).