White Witch Where Art Thou?

It's never a good thing when demons come knocking on my door especially when they're blood kin, given the only time I'd met my demon relations they had kidnapped me to force a little family reunion and father-daughter bonding. It seems one of my distant cousins made it to the border realm, mated up with a witch with just enough fae blood to give her some longevity boost and then managed to 'misplace' her. He was young and a pure born High Demon, both indicators that if he stayed in the...
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It's never a good thing when demons come knocking on my door especially when they're blood kin, given the only time I'd met my demon relations they had kidnapped me to force a little family reunion and father-daughter bonding. It seems one of my distant cousins made it to the border realm, mated up with a witch with just enough fae blood to give her some longevity boost and then managed to 'misplace' her. He was young and a pure born High Demon, both indicators that if he stayed in the border realm himself to search for her he would go psychopath mad within weeks. That would just be messy for us all. So my brother wants me to hunt the witch down without knowing her true name or what may have happened to her. Not like there are not dozens of coven gangs and hundreds of witches running the Haven streets. Should be easy. With her using a fae alias and all. Since I came back from Faerie there have been more than a few missing faelings besides this witch blood so it needs to be investigated and my team is more than up for the task. Faelings are not technically under Faerie protection, most of them are mortal born, and so they are easy prey to slavers and vampires. But not on my streets. Besides the faster I find her the faster I get these demons out of my town and my life, because the second reason my brother has come to visit is because my father has decided to get me mated. He wants to pull my loyalty from Faerie by having me tie the metaphysical knot with one of his Hunters. Which requires a full merge of energy. So not happening. Besides the vulnerability that puts me in on the metaphysical level and my Seelie fae commitment issues, the Faerie Queen is very possessive of her people, even unstable half-breeds like me. Mating up without her permission, and further polluting the blood line with demon blood, would get me on the fast track to the eternal Fade