En seulement une année, elle est devenue le n°1 de l’équipe !
Here I'm looking for a French expression (a commonly used, idiomatic one) to convey the idea of "sich entwickeln" in German. The "sich entwickeln" is more than just a neutral "devenir/become" and close to "blossom into (a star)" or "rise to become (a top player)".
I would say the phrasing above, for lack of a better expression that comes to mind, but it will most likely come across as lacklustre, compared to the idea conveyed by "sich entwickeln".