Some years ago, a friend of mine here had a stroke that affected his speech and language. Since there were no English speaking S&L therapistsat that time, , he ended up having to go back to the US. He had excellent health insurance here but they were unable to provide an English speaking therapist.
I know there is or was a S&L therapist here who works (or worked) in one of the private schools. I don't know if she is connected now to an insurance company, but I doubt it.
With S&L issues, it is best to start the therapy very quickly.
Dr. Justina has a PHYSICAL therapy facility, but not Speech and language..
Good luck, I hope your mom gets the help she needs quickly.