Glad your psychologist is helping you out with all this. It could be the Pilates physio is feeling a mite guilty? If it was the fill in for their shop that caused all this, they may be getting defensive? Besides it's always easy to blame the patient when things do not go as planned rather than to just say things are not working as planned. Hard cases are frusterating for everyone involved I think. Still should not be taken out on the patient.
Good luck, hope there is something that can be done for you.