When a female in Heat sees a potential mate, the hormones that are released may trigger an involuntary reaction. This reaction causes blood to rush to the vaginal area, this swells and creates irritation and irritability. One is able to tell when a female has IVS when she starts sweating uncontrollably and breathing heavily when she sees a potential mate.
Taking somebody's animal and claiming it as your own would be inflammatory. Moving to somebody's neighborhood and claiming it as your own would also be inflammatory if you're not originally from the neighborhood.
The girl tried to do as many inflammatory things as she could think of, and thought they were as hilarious to everybody else as they were to her.