s vary so much, that each person with MS is said to be unique.
The most common researched sx leading up to a dx of MS are
the visual
signs eg Optic neuritis, Nystagmus, diplopia etc
MS isn't known to be genetic, its more common to be the only person in the family to be dxed with MS, twin studies etc etc and paediatric MS is very rare, so the likelihood of your teen daughter's sensory issues actually being MS is quite low.