Princess Beatrice sent a touching tribute to her mother Sarah Ferguson. The eldest daughter of Prince Andrew and the Duchess of York visited a primary school in Croydon earlier this week as part of Oscar’s Book Club in association with Amazon Reading Volunteers. During the engagement, the princess gushed over her “incredible” mother as she read to the children at West Thornton Primary School. The princess said: “’I grew up with an incredible mum as a children’s author, so stories really created that sense of imagination. “I really appreciate what stories can do, that special quality time, that…