[ Ciel takes the water bottle, but just looks at it in his hands before clutching it tightly. He doesn't take a drink, not yet, but he does feel the need to explain, at least in some part. ]

It didn't occur to me until... today, really.

[ He shakes his head ]

She looked like my Aunt Ann. They— They had a similar kind of personality too, I think. It's hard to say, since it's not as if I truly knew her, but— [ He breaks off there with a cough, shaking his head as if to say he's fine, but that should also explain the visceral reaction, at least partially. ]