Well, Jane becomes Thor because of her inner strength and heroic qualities. Maybe there's a magical or divine intervention that recognizes her worthiness and grants her the powers and the title. It's all part of the complex and imaginative world of comics.
Well, basically, some cosmic forces and her own determination led to Jane becoming Thor. There was a confluence of factors that allowed her to take on the mantle and the powers associated with it.
In the comics, it was through a series of events and circumstances that led to Jane taking on the mantle of Thor. Maybe some magical or cosmic force was involved.
Jane Foster became Thor back in 2014. This change not only gave a new dimension to the Thor mythos but also offered an interesting narrative twist for comic fans to enjoy.