Sleep Walking?

I think maybe we just had our first experience with sleep walking... Andy and I were watching TV when all of sudden Sammy comes walking down the stairs. Keep in mind this was around 10:00 pm (she went to bed at 8) and we asked her what she was doing. She mumbled something about getting something... that's the most we got out of her. She then stumbled into the kitchen and Andy and I were a little confused as to what was going on as we heard the fridge open and shut. A few seconds later Sammy came back into the living room with her pj's down to her ankles (yes, that included the panties as well). We were a little shocked and said, "Sammy what are you doing?" She then mumbled, "I can't. I can't. I can't." She was doing the pee pee dance so I walked her toward the bathroom by the kitchen. She, again, walked to the fridge and then the drawer with the kid dishes. I had to take her by the shoulders and walk her into the bathroom! I don't know why the poor kid was so confused as to where the bathroom actually was, but there is one by her bedroom! Sleep walking? What do you think? At least she made it to the toilet in time and that she's not a confused boy. That would have been ugly... and nasty!