Their divorce was simple. Fiona's second marriage to Ryder was only witnessed by a few people. The divorce from Robert wasn't easy, considering Robert's over-possessive nature. Hurt by Fiona's remarriage, Robert became enraged. He repeatedly attacked Ryder and Fiona's residence, forcing them to move as far away from Robert as possible. This left Anya, whom Fiona found hard to leave.
Jacob said that since he learned and understood his mother's story, Anya's name was the only one mentioned. Her sister who lived in Beverly Hills, probably with their grandmother or father, was unknown to Fiona. The way his mother praised Anya and spoke about her efforts to take Anya back...