My cat Cleopatra has gotten herself into a habit of sleeping with my boyfriend and I at night. We keep the door shut at night because my boyfriend can't sleep with it open from the noises of the fish tank filters in the living room. Anyways, when she wants out, she'll whine at the door for however long it takes to get one of us up! Then, about 30 minutes after we let her out, she's back at our door, whining to get back in!!! It's a constant battle between us and the cat. It's very annoying, and disturbs us from our sleep every night. What can we do to deter her from this behavoir?? Please, any suggestions are appreciated!!!!!