Buddy's Wife

My buddy recently got married to a girl named Kristie from out of town. From the moment I saw her I wanted her. She's a very short chubby blonde with some nice tits and a nice thick ass and thick thighs.
After a party one night where we all got very drunk my buddy passed out and she was on the verge of it too. I reached out and started stroking her leg. She kinda moaned a bit but didn't stop me. The next thing I knew I was sliding off her shorts and top, removing my own clothes and climbing on top of her. I had no trouble entering her fat wet pussy and fucked her for maybe 5 min before I came in her . I got dressed and she staggered to the bathroom. The next day she said she has no recollection of anything that happened after doing shots. Is she lying so she can plead innocent or did I take advantage of her?