ALS?

I personally don't have ALS but I joined this group to get information for my mom. She is 56 history of RA, migraines, psuedosezuires(mostly has with migraines). Back at end of 2016 she started having field vision problems that resolved and went to blurred vision. 2017 she got a tickle in her throat which lead to severe slurred speech, problems swallowing and jaw weakness. She is strong as an ox works as a CNA! Normal MG bloodwork, normal MRI and normal Emg. Her Neurologist said no MG cause her bloodwork was normal Im So frustrated! She has extreme fatigue after working and no energy.Is this ALS or something else? Can anyone relate?