I think her neuro may have misunderstood your question? DMDs/DMTs (disease modifying drugs/treatments) aren’t given for symptoms, but to reduce the number of relapses, reduce the severity of relapses, delay disability, etc. If she has had at least two “clinically significant” relapses in the past two years then she is eligible for the injectable DMDs. (Stronger DMDs re reserved for more aggressive MS.)
These are the NICE criteria for DMDs (google “CG8 Full guidelines for multiple sclerosis” to get a full copy):
People with relapsing-remitting MS should be offered interferon beta (any type) or Copaxone provided that the following four
conditions are met:
• can walk 100 metres or more without assistance
• have had at least two clinically significant relapses in the past two years
• are aged 18 years or older
• do not have contraindications (see specific summary of product characteristics (SPC) for details).
The big problem with these is “clinically significant” - it’s seriously subjective.
Given her age, I would be pushing HARD to get her on something if I were you. Side effects are minimal versus the potential effects of relapses and they really do work.