DD has to pick her options. She wants to pick music and art but her mentor is pushing her towards more academic subjects because she is so bright and could achieve anything.
She's been advised to watch a documentary about a boy whose parents told him he wasn't clever enough to be a doctor who is now on his way to Oxbridge 
AIBU to think it works both ways? Yes, DD is capable of achieving anything and obtaining any career she chooses but what she wants to be (atm) is a colourist. Of course this might change but every career she has picked has been arty (fashion designer or buyer for a big fashion house, animator or graphic designer, tattooist and now a hairdresser).
FWIW, I have pushed her to do something academic in case she changes her mind. She's opted for triple science because I gently shoved her in that direction and I will be gently shoving her towards an English AS or A level alongside her other studies if she goes on to do hairdressing at sixteen.