Demon's Stolen Strength

"I'll do it! Just leave my brother alone! I'll go with you!" I cried feeling defeated. Demon Lord Shiuku smiled cruelly down at me.
"Don't look so sad my strong little one. We'll be having a family of our own real soon!." He paused. "Come here love." His lips grazed mine softly.
*Warning- mature content and dark themes (triggers) will be present throughout the story!*
After a horrific abduction as a small child, Aileen the sole princess of Lutz, is left broken. As she is ransomed back to her royal family, the Queen falls sick. The princess is left with her Father, the strength behind Lutz. The man she has always looked up to.
Shortly after she loses her Mother, a dimensional rift takes her from her home leaving her all alone in a forest away from all that kept her safe.
For six years Aileen has been trapped in a different dimension growing stronger in hopes of returning powerful and brave to her people. Aileen joins the Demon Slayer's Society with goals to flourish, help others from suffering the way she had, and to search for a way back to her Father.
She will show her strength to those who would take advantage...but...
what happens when her reason for being there is none other than the Demon Lord the DSS exists to fight against. If she is his obsession that he will have. When he finally has her in his bed.
Will desire and the demon win? Will she escape, or will she even want to after he has his way.