That's because Fergie not only stayed in England, she continued to live on the Queen's estate. Fergie and Andrew have been living together in the Royal Lodge at Windsor for most of the years since their divorce. One assumes it's been an "open" marriage, given the Epstein situation. But Fergie has been a good mother, and she and Elizabeth remained close. Liz willed "custody" of her precious Corgi dogs to Fergie last year when she died.
Ah. Didn’t know any of that. I have to admit I always like Fergi.