A source tells ET that the Princess of Wales wanted apologize in order to acknowledge any misunderstanding.
Kingston's funeral service was attended by William and other close family and friends.
ET spoke with Katie Nicholl in the wake of the Princess of Wales' recent photo editing kerfuffle.
The couple was photographed in their car together on the way to an appointment.
Several news outlets pulled the image released by Kensington Palace on Sunday, claiming it appeared to be 'manipulated.'
The Duke and Duchess of Sussex visit the family of Irma Garcia, one of the 21 people killed in the Robb Elementary School shooting.
Sunday, March 10, is Mother's Day in the U.K. The royal family also honors Kate Middleton.
The Princess of Wales underwent abdominal surgery in January and has been the subject of lots of online speculation.
Kate Middleton's absence has left royal watchers with questions following the announcement of her abdominal surgery.
The 76-year-old royal has recently taken on additional responsibility in the wake of her husband's diagnosis.
Kate Middelton emerges for the first time in 70 days following her recent hospitalization.
The 42-year-old Princess of Wales was seen riding in a SUV driven by her mother.
ET has learned that Thomas Kingston, the husband of Lady Gabriella, died by apparent suicide.
The Princess of Wales had abdominal surgery in January and has not been seen in public since December.
