I don't know anything about proper spelling of pronunciations, however I can spell it phonetically.

Do-Kane (Kane should sound like the last word of candy cane, a hard C)

Though of course Calleigh has a southern accent and so it sounds almost like "Do-Kay-ne" still the hard C but there's a little y in there before the N.

Oh, and Calleigh is Kelly with an A instead. It rhymes with Alley like in alley cat.