Marriage (The Elder Scrolls 5: Skyrim)

In the name of the Nine! Help solve the problem, he married Lydia and in one of the tasks she was sent to an eternal feast in Sovngarde, well, I was saved during the battle, then resurrected her using the (resurrect) code, she became the default character, and not a wife (although she sits in my house in Whiterun) after that Mara's amulet does not work, you cannot marry again, another question is how you can subordinate Serana to your will ?? is getting married? May Talos be with you, brothers.