The Duchess of Kent, who died Sept. 4 at age 92, was a practicing Catholic and a passionate advocate for music education. "With great regret, Her Majesty The Queen has withdrawn from attendance at this afternoon's Requiem Mass for The Duchess of Kent as she is recovering from acute sinusitis," Buckingham Palace said in a statement. Members of the royal family including the Duke of Kent, Lady Helen Taylor, Prince Michael of Kent and Lady Gabriella Kingston attended the rites. On Thursday, she is expected to host the First Lady for a tour of the Royal Library and Queen Mary's Dolls' House. Her current illness has prompted palace aides to carefully manage both her and Charles's schedules during the high-profile state visit.