Elia's words had Toria thinking of the poison that had afflicted Gwyn. It had been rare, which was part of the reason why the maesters had failed to cure her. If someone had access to poisons like that and had something against the Stark, Martell, Targaryen and Lannister families, that was quite unsettling.
"Caution may be for the best at the moment," she said quietly. "I only wish there was some way to set a trap for the person in question."