Now the Witch always knew she was different, and discovering just how different and why was a lifelong pursuit. Once she was old enough, she set about finding her birth parents. She found her mother, and as she got to know her it became apparent that NOT being raised by her was a good thing. She is the oldest child of her mother who was a 13th child.
The man she was told was her father turned out to not be. She never got to meet her actual father as he passed away a few years before she learned who he was, but she did determine when and where she was conceived.
She was conceived at a party on a Halloween night.