AEG: Rian's mother
One more try. I'll make it brief.
Cassie goes to Woldercan and gets Gideon to make her look good again. She comes back to Earth about 20 years before she left. She is still in her early thirties; Reis should then be in his twenties. She knows his tastes and uses her knowledge and looks to meet and marry him. She gives birth to Rian.
After a number of years, her looks start to fade and Reis strays. He leaves her for another beauty, Pavlatos. Pavlatos goes to Woldercan with him when he is appointed ambassador. Reis dumps Pavlatos after a number of years, but it costs him plenty.
Meanwhile, Cassie knows about Gideon, knows that he can and will fix Rian's heart. He does so. Cassie otherwise stays in the background. She knows the future but cannot change it and dares not try; because otherwise Rian would not exist. When the time is ripe, she contacts Pavlatos and persuades her to rescue her younger self from the island. Younger Cassie goes to Woldercan . . . etc.
Everything happens just as it happened in the book. Cassie changed nothing by going into the past. She went to Woldercan and found her lost love again, if only for a while. She gained a child who is a little bit of the man she loved.
-Roy