Jailed nursery worker Vanessa George is seen in a police handout photo.
Gerasimidis told the court George intends to claim that Blanchard used her to access indecent images.
The abuse for which the three were convicted began in September 2008 and carried on until this June. Royce adjourned sentencing to the week beginning December 14.
(Reporting by Michael Holden; Editing by Steve Addison)