Abby has always lived in a second floor apartment. Off the ground she would sit and chirp at birdies but there were no other cats. We moved into a new house a month ago. Two weeks ago Abby got her first look at the outdoor neighbor cat. She reared up, flipped out and sprayed. (I should also mention she is spayed.) Heck of a mess, cleaned it up thoroughly. Since this happened she is now OBSESSIVELY at a window in our house. Any window. All the time. She doesn\'t play anymore, she doesn\'t snuggle. She just looks for this cat and starts this pattern of territorial behavior. I can\'t leave her alone anymore out of fear that she\'ll ruin my furniture. She is now in a good size crate while I\'m at work. Any suggestions so that I and my cat can have our normal life back?