Seventy_X_Seven
Member
I'm sure it was after she touched the saber
That would surely be "the force awakens" then. A lightsaber on its own is nothing overly special. It certainly doesn't possess any force powers of its own. However we have seen countless times that the force does have an individual presence (Vader sensing Kenobi on the Death Star, for example). We also know that someone's force presence can linger on an object or an area for years, as shown by this canon comic,
So Luke goes into hiding to learn more about the Jedi Order after failing Ben Solo. He doesn't want to risk failing his own daughter, so he abandons her and uses an advanced Jedi mind trick to cloud her memory so she won't go seeking him. Luke's force presence is lingering on his old lightsaber, and when Rey approaches it partially reverses what Luke did. The force has awoken, it's not instantaneous but Rey is slowing recalling her abilities.