Grey didn't hold back and passed on the techniques to the young lady. The young lady was elated as the techniques were being passed to her.
This method was actually faster than the previous method she was using. Although she didn't want to say it, it wasn't a bad thing Grey absorbed the orb. She might have had some use for the large and pure quantity of essence inside, but her main aim was these techniques.
While attacking Grey, she knew she wasn't a match for him if they fought head-on, hence her request for him to pass on the techniques to him.