@ebrown p,
Well, you know ebrown, since she's in the public eye, if interviewers, co-workers weren't pronouncing her name the way she wanted, she would have corrected them at large a long time ago.
It's not like when an individual in a brief encounter mispronounces a persons name. May not be worth correcting since you won't be seeing that person again.
To be in the entertainment industry, where your name is said to the public on a regular basis, you would have corrected this mistake already.
Since everyone, in every interview, both American and British, and someone she works with every day pronounces it Cotey, and she has never corrected anyone about it, I'd say that's how she wants her name pronounced.
Of course there's the one chance in a billion that she has just never mentioned to the multitude of people that have heard her name pronounced Cotey, that the pronunciation is incorrect, and she just lives with the pain.
Yeah, that's it.