It's the pattern of the carpet. Or are you referring to her leg? Maybe I threw the background TOO out of focus with my shallow DOF.
Or are you referring to her widow's peak? And speaking of distractions, I was going to clone out her leash at upper left, but it's just a quickie grab shot.....nothing important.
Nice photo! She looks really sweet, and I'm staunchly a cat person, so I don't say that lightly!