This is interesting because lately I've had something similar happen to me.
Me and an ex were feuding. I was chanting on my way to my ex house for protection and strength. When we starting arguing a black cat appeared at the door and tried to get in. This cat has never been in the area nor in the house. Not until I calmed down did the cat stop meowing at the door. But everytime I'm over there and I get bothered, the cat appears.