Ok, act as a Dramatica story theory expert and help me to determine my story’s  Objective Issue and Problem. 
Synopsis: 

Crown Princess Rhaenyra Targaryen (Main Character) sails back with her family (husband Daemon, her sons and stepdaughters Baela and Rhaena) to her Dragonstone castle from a royal dinner with her father and Greens. When they arrive home, Rhaenyra learns from her sons, Jace and Luke, that they have performed a magical ritual to change their appearances in order to avoid rumors about their illegitimacy. Suddenly, Rhaenyra meets her seventeen-year-younger self from the past, Nyra (Impact Character), and her husband’s seventeen-year-younger self, nicknamed Daemion. Nyra and Daemion were accidentally summoned by the magical ritual, done by Luke and Jace. Daemion is not yet married to Nyra.
Nyra meets Rhaenyra, Rhaenyra decides to help her past self to return back. 

After a short but heated encounter between Nyra and Daemion in the castle, he stomps away, Nyra follows him to the guest room and seduces Daemion. Next day he asks Rhaenyra for Nyra’s hand in marriage, but Rhaenyra forbids it out of sense of obligation to her children and stepchildren, although she secretly wishes her past self could marry Daemion as that change would provide her with a happy marriage and secure her claim to the throne.
Meanwhile, Baela and Rhaena - the daughters of Daemon from his previous marriage with Laena - fear their existence will be erased if Nyra marries Daemion. They discuss the plan to stop Nyra and Daemion from eloping and enlist Ser Criston to help prevent the marriage of Nyra and Daemion. Jace and Luke also side with Baela and Rhaena against Nyra and Daemion, since Jace is betrothed to Baela and Luke is betrothed to Rhaena. 

Notes: 
Rhaenyra’s sons love her very much but they like their brides too (Jace has a crush to Baela already), and they feel guilty for performing the magical ritual that summoned Nyra and Daemion from the past.
Baela and Rhaena have spent the last six years mostly living with Rhaenyra and their father Daemon on Dragonstone and they like Rhaenyra a lot as their stepmother. Baela finds young Nyra interesting and bold, she doesn’t want to hurt her. But if Nyra marries Damion now, Damion will not marry Laena in the past, meaning Baela and Rhaena will not be born.
