Mrs. Sally Byde invited Lin An upstairs to the drawing room for a conversation, clearly recognizing the potential influence Lin An might bring.
In fact, it wasn't just Lin An's sermon at the International Supernatural Mediation Court conference, but also Lu Jiao's actions in Dali Country that made her vaguely aware of Lin An's influence within the 'Sea Will School.'
The most obvious sign of this was the sudden emergence of a new face in the Sea Will School—Ms. Mai Qin.
At the time, she had Lin An and others try to snatch the key to the Divine Heart of the Sea God controlled by the Sea Will School, which clearly indicated that something had happened.
Later on, Lu Dexian's efforts to bring the Sea Will School back into the good graces of the Baide Family also served as evidence for her suspicions.