Piercing

I know piercings are a touchy topic to some but my question is my daughter already has ear pierced but she wants her cartilage pierced. She is not interested in her second holes just one cartilage piercing.. I’m glad she is older to voice what she wants. And thank goodness it is not her belly button she’s asking for!

What age is appropriate to get her cartilage done? She has hit puberty but not yet a teen.

I did talk to her about the importance of cleaning and the soreness and sleeping on it but girlie is not budging. Is there a certain age she needs to be