My DD had been at a PA 6th form, so had some experience and had done a few shows through a local MT group. She got two offers, both of which she wasn’t impressed with, but deferred one to take a gap year.
She worked constantly. First she auditioned for the entertainment team at a theme park, doing daily shows and characters. She also worked in the local theatre as a barista and auditioned for a production at a local theatre, which was expenses only, but a good opportunity to perform.
For the summer she has contacted an agency that supplies hosts to holiday parks and has had a recall for that. She also travelled to the USA for a short spell.
This year she re auditioned, dropping her deferred place and has a few offers, from better colleges.
She also auditioned for Disney Paris and got to the last few, they asked her to return and audition this Feb, but she was so busy. However a friend starts a summer contract with them shortly.
Your DD could try agencies for summer work, The Agency Excellent Entertainment is a good one. Also look at Disney Auditions website and or if in London, some of the immersive experiences, London Dungeons etc. rubbish pay, but good on a CV.
Alternatively sign up with an extras agency - DD did a few Netflix and soaps, which she found interesting although again, poor pay!
Where did she do her foundation? Have they not helped her?