There were many books written about Mary Bryant so I thought I would just point in the direction of the TV series which ktlou referred:
Mary Bryant : her life and escape from Botany Bay, King, Jonathan; Pymble, N.S.W. : Simon & Schuster Australia, 2004.
The transportation, escape and pardoning of Mary Bryant (nee Broad), Currey, C. H.; Sydney : Angus and Robertson, 1963.
Boswell and the girl from Botany Bay., Pottle, Frederick A.; London : Heinemann, 1938.
A long way home, Walker, Mike; Chichester, West Sussex, England ; Hoboken, NJ : Wiley, 2005.
Escape from Botany Bay : the true story of Mary Bryant, Hausman, Gerald; Orchard Books, 2003.
To brave every danger' : the epic life of Mary Bryant of Fowey, highwaywoman and convicted felon, her transportation and amazing escape from Botany Bay Cook, Judith; Macmillan, 1993. ISBN 0-333-57438-9
The Fatal Shore, Hughes, Robert ISBN 1-86046-150-6
The Girl From Botany Bay, Erikson, Carolly ISBN 0-471-27140-3
Remember Me, Lesley Pearse, Penguin Books Ltd, ISBN 0-14-100649-8