"I'll keep an eye on Christine, you follow Sarah okay?" You asked and Rusty nodded as he headed into the forest after he was sure that the young woman couldn't see or hear him.
You returned to Christine and told her Rusty was following her daughter. "I'd like to ask a few more questions, Mrs. Atwell."
"Ms. Atwell, actually; and I'd prefer you call me Christine."
"Okay, Christine." You nodded. "Tell me about Sarah's father."
Christine was silent for a brief moment before she answered "I'm... not entirely sure she even HAS a father." This intrigued you as it was starting to narrow down the possibilities. "I woke up one morning, feeling nauseous. I went to the doctor, who did some tests and told me I was pregnant. I was nowhere near far along enough to have been with my last date; and I was ALWAYS careful about what I drank when I went out."
"I explained to my family and co-workers that I had myself artificially inseminated;" she continued; "but I couldn't rightly say if I was... you know... or not..."
You thought for a moment. "A few more questions Christine, and I promise, they do pertain to the investigation."
"Go ahead." She answered.
"How old are you?"
"Forty-five, next February; though, I must look a fair bit younger." Indeed; one wouldn't peg her as being much older than her late 20's even IF she took exceptional care of herself.
"I, see; and, your orientation?"
Christine was taken aback at that question; but, assuring her of it's relevance, she answered. "I... WAS straight... up until around the time the doctor said I got pregnant. Come to think of it, around the same time, I had a really vivid dream, about this achingly gorgeous woman. She started making out with me, and I had these visions of blossoming flowers, and giant butterfly wings fluttering; it felt so wonderful, I felt so... free! After that..."
"You started slowly becoming attracted to women; and by now, you've lost almost all interest in men, right?" You finished.
"How did you...?
"If I'm right, that was no dream you had."
Christine was shocked. "Wait, are you saying a WOMAN got me pregnant?"
"If she was, as I suspect... a fairy."
"F-FAIRY!?" She shouted.
"Fairies are entirely female, and have been known to cavort with humans." You explained. "For the intimate contact with a fairy, as you experienced, to affect you the way it has; this must have been an exceptionally powerful one. Most likely a Lady of the Seelie Court as it's springtime now. The experience left its mark on you, causing your shift in sexual orientation and uncommonly youthful looks."
"How far will this go..." Christine asked before her eyes widened in shock. "What of my daughter!? Is she... a fairy, too!?"
"Relax, I'm going to call Rusty for an update." You dial the phone and fill Rusty in on everything. "What's Sarah doing now?" You ask.
"She's in a clearing, standing on a tree stump." He answers. "Now she's..."