Her curiosity got the better of her. Maybe she didn't just stick her nose in her employer's business... maybe she wanted in on the naughtiness all along... Cleaning all day long cannot possibly be that exciting.. and in her heart of hearts, she is a submissive ... all that "yes, Madam", "no, Madam", "right away Sir". There's something in there and Eris will twist and tweak and take it out of her. Because Eris likes to corrupt innocent girls, even when they're her staff. Especially when they're her staff.