Yeah, gonna agree with the stuff mahtan said. I can't possibly fathom how people instantly suspect her, especially considering the look Sally had on her face when talking to the head maid some chapters ago about Ivona's personality, as well as the look of fear when she thought Ivona was rejecting her. There may be some kind of hidden agenda in regards of her being there(i.e. the Tristan spy theory), but nothing particularly indicative of being malicious =01.