She's Sweet, But A Little Slow

I bought the pillow Miss Huffy Puffy is sleeping on about 4 months ago, placed it strategically and invited her to park her little self on it.  No interest was shown.   She always seemed to enjoy lying in that spot before the pillow because it was in a beam of sunlight so I thought it would be a nice gesture to add something soft for her comfort.  I fluff it, adjust it, clean it and return it to the sunbeam but to no avail. Two days ago she decided to try it out and she hasn't left it yet except to eat.  Why she's finally decided it's the best spot in the house remains a mystery.  I don't expect to live long enough to figure out why cats do what cats do so the mystery will remain unsolved, at least by me.