I don’t know about strokes occurring significantly after one has flu*, but DURING the illness - yeah. Nearly lost my brother in the 1st instance, and my Dad in the 2nd. (This was years B4 COVID.)
*Inflammation after COVID is definitely a “thing”. One of my wife’s best friends, a mid-40’s age gal, is in the hospital with just such, after a mild case of COVID a few weeks ago. Only it’s not so much her blood vessels that are the main problem so far, it’s nerve inflammation. Kinda like Bell’s Palsy (her initial self-diagnosis) but more extensive.
One of the side-effects of the vaccines was Bell’s Palsy. That was a listed side-effect.
I was saying just yesterday though that we are blaming the shots for all these sudden deaths. But I am also wondering if this is a late effect from getting Covid itself?
Unless you know whether she’d been jabbed, there is no basis for claiming that it was covid and not the jab that caused your wife’s friends problems.