Sarah Ferguson has opened up about her relationship with her granddaughter Sienna in a rare glimpse into the life of Princess Beatrice and her family.The Duchess of York has launched a brand new podcast along with her pal Sarah Thomson, titled Tea Talks With The Duchess and Sarah. Speaking on the second episode of the new show, the 63 year old told listeners that one year old Sienna is “very very strong” - something she attributes to the tot’s close bond with her older half-brother.