If you were looking for a different story with a similar name, you might be thinking of:
He begins working at an all-girl academy, where the environment immediately feels off. Long Lost Daughter [Chapter 1-8]
(Wattpad): A fanfiction about Irene Marcos finding her daughter after 16 years. If you were looking for a different story
The protagonist moves his family hundreds of miles back to his childhood town after a teaching opportunity opens up. Long Lost Daughter [Chapter 1-8]