However, Grogu learns of Din's visit, and Luke gives him a choice — take Yoda's lightsaber and train as a Jedi, or accept Din's armor and forsake the Jedi ways of non-attachment.

Source: https://screenrant.com/mandalorian-luke-skywalker-mark-hamill-grogu-jedi-future/

Other than Master Yoda's force ghost accepting her as one, she was never ordained as a Jedi.

Source: https://collider.com/best-star-wars-quotes/

Whereas the prequels largely ignored Yoda's role as a quirky, wise mentor in favor of giving him over-the-top lightsaber fights, "The Last Jedi" had him return to doling out actual wisdom to his apprentice.

Source: https://www.slashfilm.com/1156373/the-return-of-the-yoda-puppet-in-star-wars-the-last-jedi-put-frank-oz-through-the-wringer/

Yoda's unsung apprentice did, however, directly affect Luke Skywalker's training.

Source: https://screenrant.com/yoda-secret-apprentice-not-jedi-bree/