So Ijust thought about this after seeing her talk to Grogu I think she is a survivor of the purge and was taken in by the Mandalorians as a foundling. I think she survived and escaped the temple perhaps a Mandalorian on the planet found and rescued her. However I think regardless of whether she was a Padawan or a youngling I think she was old enough to know a lot about the force but not enough to be a jedi. Hence why she sent Din to find them.

This also explains how she knew Grogu came from the Jedi. I think she still uses the force in her duties as a Mandalorian. She also tends to talk and conduct herself like a Jedi she never gets emotional.