Perhaps the father is another well - known fairy in Pixie Hollow, like Terence. They could have had a secret relationship that led to the baby. Terence has always been close to Tinkerbell, and their shared experiences with pixie dust and helping Peter Pan could have deepened their connection to the point where they had a baby.
One possible plot could be that Tinkerbell discovers she's going to have a baby. She might be initially scared but then decides to embrace the new chapter. She could seek advice from her fairy friends like Rosetta on how to take care of a baby fairy. And as the baby grows, it could show unique magical abilities that Tinkerbell has to help develop.
Perhaps it's a human boy who accidentally wandered into the fairy world. Tinkerbell, being curious, interacted with him, and in a magical turn of events, she became pregnant. This would create a lot of drama as the fairy world and the human world don't usually mix in such an intimate way, and there would be a struggle to figure out how to handle this situation.
The father could be John Smith. Their relationship in the original story was complex and having a baby together would add a new dimension to their story. It would also explore how they navigate parenthood given their different backgrounds.
Maybe it's a mysterious character. The fanfiction could introduce a new character as the father, someone with a hidden past or special abilities that add an element of intrigue to the story.
It could be a character she has had a long - standing relationship with in the original story. Maybe someone who has been by her side through many adventures and they shared a deep emotional connection which led to the baby.
Perhaps it's a new character, a foreign traveler who came to Mulan's village. He was charmed by Mulan's strength and beauty, and they fell in love. He is the father of the baby in the fanfiction.
It could be Naruto. Given their relationship in the original series, it's very likely that he could be the father in the fanfiction.
Jace could be the father. Since they have a strong connection in the original story, it would make sense for him to be the father in the fanfiction.
Another option is that the father is a character from a different species or planet that Ahsoka met during her travels. Their encounter was brief but passionate, resulting in the baby.
It could be Sasuke. Given their relationship in the original series, it's quite possible that he is the father in the fanfiction.