This leads to the question.
Exactly who are the voices in Justine’s head? We have been led to believe that it is mental illness, but Michael hears voices, and Harry has heard voices and in story they are due to external entities, not mental illness (except once or twice with Harry).
If I remember correctly Justine was hotly contested between the White and Red Courts, could she have been set up as a lure for one or the other? The White Council were aware long before Grave Peril of a possible threat of the Red Court, could she have been set up originally as a White Council spy against Bianca and the Red Court, only to be seduced by Thomas?
Justine was on medication which blocked the voices, she would have come off it during pregnancy, leaving her susceptible again to them. This was at the same time White Court secrets started to be leaked to the outside.
Is Justine an agent of Martha Liberty and the Merlin (but not Eb, who is shoot first, behead, burn and scatter the ashes at a crossroads before asking questions first). The Merlin is certainly capable of this type of communication. Could the White Council be running two different unrelated operations? Intelligence on Justine and Eb running his own sabotage operation through Thomas to start a war between Lara and Etri?