I would probably blow it off, especially since it is "just" 5 times in 4 years.
Now, if you could somehow manage to run into her in the grocery store etc, and say something nice-hi, I see you in your truck when I'm riding" etc-that might not be so bad.
If you went by her house, she might sic her husband, kid,cops on you.There is a tiny chance she is crazy, as opposed to just occasionally a impatient AH.
It is unsettling to have someone buzz by at high speed-especially if they suddenly hit the horn-it could cause you to make a wrong move-but it probably isn't illegal(except for the speed), and there just isn't anything you can tell the cops that they would do anything about.
Crummy, but probably just let it go.
Luck,
Charlie