Maybe, it's the "secret" hugging and kissing that makes things a little exciting for her, leading to her libido being heightened. Just a thought. Kids are not stupid, however, - I bet they've already figured something is going on.
It's good that you are not setting your expectations too high - try and work on letting her come to you, without being cold or distant. More like warm and inviting, but not pursuing.
Have a good weekend!
Me:57 H:52 M:28 Got another lawyer last year and filed. D35,S/D twins28,D22 EA4/04 End? Who knows? "Life is like a mirror. Smile at it and it smiles back at you." — Peace Pilgrim