The lady of the house smiled demurely and handed me a cup of tea in the conspicuously tidy living room of her substantial six-bedroom villa on the seafront in Bray. She could have been welcoming a visiting clergyman but no… Sinéad O’Connor was fussing over me, a foot-in-the-door reporter there to record a radio interview with her. And looking back, she really was a gracious hostess; I have nothing but pleasant memories of that day. Since 1990, a haunting visual image of Sinead O’Connor has been seared into the collective memory of popular culture. Those who have seen it over…