Talia Alora was born in the time of war, her parents being Sophie Elizabeth Foster and Fitzroy Avery Vacker. However, they weren't actually in love - they had merely contributed their DNA to create an elf that would destroy the Neverseen once and for all. You see, just as Sophie and Fitz died at the hands of the Neverseen, Sophie's last attempt to bring down the rival group was teleporting her and Fitz's DNA to the Stone House Facility of the Black Swan, and mentally sending instructions to Mr. Forkle so that he knew what to do with the DNA samples.
So Talia peacefully grew up amongst the mountain folk; just as Sophie had with her human family in San Diego; each day, her powers growing stronger and stronger. And that shall continue until she is ready to take on the Neverseen.