It could be that the father is an unknown wizard who Harry had a brief encounter with. Maybe it was a one - time magical connection that led to the pregnancy.
It could be some other wizard who Harry had an unexpected encounter with. Maybe it was a wizard who was secretly in love with Harry and used some sort of love - related magic that had an unforeseen consequence.
Maybe Simon. If the fanfic takes an alternate path where Clary and Simon end up in a romantic relationship, he could be the father. However, he might be away or unable to be with her when she gives birth.
Well, it could be Finn. They had a long - standing relationship on the show, and it would be a natural choice for him to be the father in the fanfiction. They had a deep connection, and if the story is set in a timeline where their relationship continued to develop, it makes sense that he would be the one.
Another possibility is that the father could be a completely new character introduced in the fanfiction. This new character could be from a far - off land and bring some new elements to the story, like different ninja techniques or a new perspective on the ninja world that influences the upbringing of the baby.
One possible plot could be that Snape discovers he has a unique magical ability that allows him to carry a child. He might keep it a secret from everyone in Hogwarts due to fear of ridicule. As he nears the time of giving birth, he would have to find a secluded place within the castle or in the Forbidden Forest. He would endure the pain alone, using his own potions and magic to ease the process as much as possible.
One possibility is that in the fanfiction, she might be in a situation where she has cut herself off from her friends for some noble reason. Maybe she wants to protect them from some dark magic that she believes will target her during childbirth. Another reason could be that she's on a secret mission and has no choice but to be alone when she gives birth.
Maybe it was someone from Elsa's past that we don't know much about yet. For example, a childhood friend who she had lost touch with but who returned to her life. They rekindled their friendship which then turned into a deeper relationship, resulting in her pregnancy.
Puck could be a likely candidate as he had a relationship with Quinn in the Glee series. Their on - again - off - again relationship makes it a plausible scenario for him to be the father in the fanfiction.
It could be one of her long - time friends in the Lost Girl world. Maybe someone she has a deep, unspoken connection with. This person might be revealed to be the father as the fanfiction progresses and there could be a whole backstory about their relationship that led to this pregnancy.
It could be a mortal man who somehow managed to catch Artemis's eye. Maybe he was a great hunter like her, and their brief encounter led to the pregnancy.