The Battle of the Chair

I'll be one of the first people to admit that my cat is in interesting character. She's a one of a kind.
See, in the living room, we have a rocking chair, and two couches. On one of the couches, there is a blanket.
Sassy (my cat) believes that both the blanket and chair is hers (she also thinks my rooms belongs to her, but I'm not going to get into that now).
One problem with that, she can't be on both the chair and blanket at the same time.
My Yorkie, Romeo, also enjoys both the chair and blanket. Well, Romeo is being quite a daring dog here because Sassy is the alpha cat. She DOES NOT like having anyone on the chair and blanket but her.
So, how does she protect both places. Here's an example-
The sun is peaking its way up behind the houses. Inside one house, a human walks over to let her Yorkie out of his crate.
The instant she releases the latch on the crate, a cat comes tearing across the living room, sprinting towards a rocking chair. She lays down on it.
The Yorkie walks over to the couch, wanting to relax as well, he jumps on the couch and lays down on a blanket. The cat sits up she stares at the Yorkie, her expression showing absolute hatred. Her eyes are like rays of fire, burning into the Yorkie's back as he sleeps. The Yorkie lifts his head as well. He looks at the cat and jumps off.
So, what's the main point of this story?
Sassy gives Romeo the look of death if he jumps on either the chair or blanket. (Really, it even scares me sometimes!)

Once, Romeo was daring. Sassy was on the chair, and Romeo leaped up.

If Romeo so much as comes near the chair, Sassy's ears flatten on her head and she swats out with her paw in attempt to hit Romeo in the face and send him away from the chair.

That's our cat, she is a one of a kind.