Hi Caz.
Im sorry to hear that your physio has had to discharge you, but it isnt unsurprising.
As for not wanting to be pushy or worrying that a consultant saying your silly - this shouldnt happen. No self respecting surgeon should make you feel silly for wanting answers. You have pursued other avenues and nothing appears to help, so it is your right to know if there is a surgical option for you.
I have a feeling that you need to get a proper xray done and measured by a specialist scoliosis consultant so that you will have peace of mind at least one way or the other. You would be surprised how little the outside symptoms reflect the interior size of the curve(s). You certainly have all the markers. You may not be a candidate for surgery yet, but will be kept under annual review until they are certain that it has stopped moving. Mine was 14 years ago as I said, so they may have other options for you including a specialist pain clinic if surgery isnt the option.
FYI My youngest son developed a large thoracic curve 6 years ago at 15, it measured somewhere in the 80s which is huge. Needless to say he was escalated to the front of the queue for an operation and his fusion is much longer than mine - T2 or thereabouts down to L4. On xray his spine is now beautifully straight albeit held in place with rods and bolts. He leads an active life (perhaps more than his surgeon would like)
and is currently sleeping in a tent for a week for the Reading Festival.
Caz you have nothing to lose and everything to gain by seeing the right person.
All good luck to you
Christieuk