Much better than the original! Some critiques
The idea of your monster from your past revisiting was much more interesting than a random released crazy.
Then him reclaiming his mask! The brutal kills will some good gore.
The Doctor twist was great. I would have made it even creepier, like have him say to her in the car that he wants to rape her and then let Mike kill (that would have put it over the top.) It was still a good twist.
Shortcomings was the daughter/granddaughter dynamic. It needed more work, and better casting.
I would have also reworked the crazy old lady storyline as it felt a little bit too much like Sarah Connor prepping for judgement day.