Cynthia crouched, observing Rem's every movement from a nearby tree – she would have begun observation on him a long time ago but she wasn't allowed into the mansion territory, the guards had been very strict with their words and she understood – observing one of their Apprentices were off-limits, at least while within the Mansion – she had all the free space to explore him on the outside, they couldn't interfere with her choices and besides she had the true advantage here.
A skill... An Apprentice was capable of awakening a skill that was similar to their Soul energy, it could be a single skill or multiple skills attuned with their soul energy which would help the Cavalier in battles. Cynthia's awakened skill: Secrecy was a skill that spoke volumes of her assassin-like nature.