Thanks for query,
un diagnosed cause more harm.
Your mother developed stroke due to high bp.
Now prime important is that keep bp in control,
Go for regular check up of bbp.
Go for s. cholesterol
and blood sugar.
if any abnormality is there,treat them.
Take less salt.fat and carbohydrate
Avoid fried and junk food.
Continue the treatment prescribed by your physician.
Ok and bye.