Hi, Op. speaking from personal experience, having just finished the 11 plus journey and having received 8 music scholarships out of 9 schools where DD did auditions.
Your daughter has a great combo, my DD is also clarinet(2nd instrument) and piano (1st)
orchestral instruments are always an advantage ( provided there isn’t a surplus of those already at a specific school!)
note that most schools state approximate G5 in the first instrument on their websites , but practice shows that in highly selective schools those who get a scholarship tend to be at a higher level.
they are mostly relaxed about actual grades ( however, two out of our 9 requested to see actual grade sheets with examiner comments). Most schools wanted to see a child perform “ at a … X grade standard” rather than actual numbers on her grade sheet
in most selective schools you will do two rounds- they will most likely ask you to upload your DC’s videos and then, if they like her performance, they will invite her for the second round, where she will perform, do aural tests ( in some schools, not all), might be required to sing and have an interview about her musical interests:)
good luck , it’s a fun journey, provided she doesn’t over- stress about it and goes into auditions to enjoy herself and her music