My wife

My wife's niece, Alice became a university student last year. During her summer holiday she came to my family. My wife is a doctor, and there are two days in a week, she has work in hospital. One night when my wife was on her duty, Alice and I watched TV after dinner in a sofa. We sat closely, and I couldn't help touch her head, she hadn't any reaction, and then ears and neck. Though I very very wanted to touch he tits and clitoris, I dare not do that. After a while, she lay down on the sofa while I sat beside her. I began touch her feet and legs, after three or five minutes, her breath became very quick, but I didn't know if she was like being touched by me, so after touched her legs for about fifteen minutes, I stopped. The next morning, when I washed her panties, I found there was much juice on her panties.
I wondered if I should touch Alice' s tits and clitoris. If you had similar experience touching or being touched, I wish you can give me some suggestions.