Hi @Quarterp
Welcome
I’m very sorry to hear of your loss 
I can’t imagine being without mine
Your research sources interesting and very valuable either as an untapped avenue or as a explorers and marked ‘closed’ on the basis of fact 
Magnesium deficiency is already associated with stroke according to Magnesium intake and all-cause mortality after stroke: a cohort study | Nutrition Journal | Full Text
And other sources some of which correlated to poor recovery
Have you seen Did ANYONE have classic FAST symptoms as well as this thread
If instead of FAST the message promulgated was good to spot warning signs we would be a smaller forum; there would be people who escaped an avoidable event
Caio
Simon