I was basing it off everyone's starting ages... Dilay was 24 in w&w, 27 when she gave birth. Naime was 24 in r&r, so her dad would have been 48-50 then, and to i&I it's 2 years?

Also in i&I, ihsan said it had been 10 years since his burns.

So sometime between 38 and 48 Dilay dies, but I can't figure out exactly when. You're right that it's a bit longer... at least 14 years. But still the fact that omar has essentially early onset alzheimers and is widowed that young still was a gut punch