Feel guilty and leave

You like the way the conversation is going and you don't want to ruin any good will that might have been built up by being caught snooping around. So you silently creep away from the door and head back into the kitchen for a something to drink before heading up to bed. You fill up a glass of ice cold water and down it in one go before returning the glass to it's place by the sink. You look up once more and see movement behind you reflected in the window. Turning suddenly and finding Janet standing a few feet away from you smiling sweetly "hey hunny, you couldn't sleep either? don't tell me Emma has started snoring again" It takes you a few seconds to regain your composure and laugh politely after spending the first few moments staring in disbelief at just how fucking sexy Janet is looking. Dressed in a tiny little blue satin nightgown that she'd neglected to close and which exposed the fancy lingerie she was wearing beneath. The entire ensemble did nothing to hide her womanly curves or voluptuous breasts and the entire length of it barely covered her ass. "Haha no nothing like that, I just needed a drink to was down all that amazing food you served earlier". She gives you that familiar smile, the one that seems to make her glow with motherly warmth, except this time it's a little different, this time the look seems to linger and change a little as she takes a step closer to you "You're such a gentleman, how did my daughter get so lucky?" she asks while reaching out to touch your forearm "Well it helps that she has your looks Janet you say with a playful wink