Bell's Sister (Danmachi) (Bete X Oc/Reader)

Please know that none of the characters' ages are the same as the anime. Since I don't wish to spoil it for others, it will only be a bit similar but, not entirely. The same goes with all of my other Anime fanfics.

Phoenix Cranel is the twin sister of Bell as well as the youngest. When she was a child, she ended up meeting someone she'd never thought would be so important. Though he's a Beastmen and a Werewolf, he claims to be her Mate and Fated Pair. As soon as he comes of age, his Family decides to hold a Wedding since it was Custom for them. She ends up getting married early on and her relationship soon grows. Little by little, she slowly gets over her fear of Beastmen. When Tregedy hits, he goes to Orario as she is left with a secret that she had not even told him. So, she keeps the secret to herself. After four years, she decides to go to Orario with Bell and four others, her Children, Lucario, Zero, Alfteria and Lumine Cranel Loga. They decide to become and Adventurer for their own reasons but they're all supporting each other.

What will happen?
Will she meet with her Husband again?
What was the secret?
Will the past come back to haunt her?
Can she keep her secret?
Will others find out?
Will she break out of her shell again?
Can she trust her Mate once more?
What about her Children?
What will happen when they meet their Father?
What will the Father do?
Will the Feud between the Familias stay the same?
Will she be able to make Friends?
What will she do when her past comes back to haunt her?