Pippa and Carole Middleton are set to help Prince William with Prince George, Princess Charlotte and Prince Louis, a royal commentator has claimed. The Princess of Wales has spent over a week in hospital due to “planned abdominal surgery”, and is expected to stay there for a total of between 10 and 14 days. Prince William, 41, has halted royal duties for the time being and is taking care of the three Wales children at their home in Adelaide Cottage. He also has an important family network nearby in Berkshire through Carole and Pippa Middleton. Kate’s mother and father live in Bucklebury, which…