I was thinking of things last night, milling ideas over. Fabi's MP profile states she was born into the Templar Order, to me this means one of two things. Fiora's parents might have been Templars and hid it from their daughter, and also eventually had Fabiola. Or Fiora did have Fabiola but had to give her away for reasons. There's other theories that Fabiola is in fact Fiora, just using a different alias maybe she somehow escaped her fate at the end of her chapter. This is seems unlikely all things considered, my personal bias falls to the mother/daughter theory. But that also brings to question if and only if Fiora did indeed have Fabiola who is the father and how did Fabiola end up in Turkey?