Why Lucretia helped Gannicus in the kidnapping of Ilithyia by giving information of her departure. Lucretia hates Ilithyia but still why she will help Gannicus? She is even telling Gaius Claudius Glaber to find out Ilithyia when he shows dis-interest. What is the reason for her conflicting steps?
After re-watching the Lucretia's arc of story it looks like Lucretia has became more sane and she want revenge from Ilithyia. Now her hate-rate of Ilithyia is more then any other person. She shows nothing to Ilithyia directly but her steps always proves this. Even shown by killing Ilithyia's child with a suicide.