Mia finds running water--at midnight

Last night Mia scared me to death when I got up for the bathroom around midnight. Cats do not understand privacy--so in the bathroom she came. I put her up on the counter and turned on the water. Mia spent about 15 minutes playing in the water, dipping her paw under it, drinking, and soaking her head. Then, I needed to go back to sleep. She was happy.