Rita Wilson: ‘I’m an extremely private person, but it doesn’t fit any more’

The Hollywood star of ‘Sleepless in Seattle’ and ‘Girls’ fame has been fiercely protective over her personal life for years, but now she’s opening up in her music. She speaks to Roisin O’Connor about working with Grammy winners, her ‘eccentric’ son Chet, and permitting herself to ‘have the dream’