Call the vets back and ask if they will be willing to see her if they can get a consult with an exotics specialist. SEAVS in Fairfax, VA will provide that service.
Unfortunately you're not in the US or you could just ship her to SEAVS to treat, and they would ship her back once she had recovered. Burms aren't legal to import into the US though, so that's not an option.
If you find an exotics specialist in Canada you can ask if you can have her shipped in for treatment.