Not sure how many 17-year-old daughters you’ve had in the past, but you should probably consider what she really wants not what you really want her to do.
As a side note, How many people are actually finished with their training by the age of 18?
From my experience, you’re gonna have to give her some leeway in what she wants to do in life not what you want her to do.
For shooters who are bored they buy a new gun to renew their interest so they can be gun of the week or gun rotation guy whatever but buying for somebody who’s not interested in shooting is not going to fix what you perceive as problem.
Whether you want to hear it or not, a new gun is not going to fix what’s NOT wrong with your daughter. Instead of focusing on trying to figure out what gun that you think she wants, why don’t you focus on her. It won’t be long and she will have moved out and you won’t see her much anymore as is the nature of young adults.
Good luck