Enjoyable, but some funny bad parts

Other have already mentioned when the main Mom knocks out the female villain, why not take her gun?
But how about Jason Patrick talking her through everything. He gives her step-by-step instructions on where to go and how to hide, and he is very professional...except...
He waits the entire night and THEN asks her if they have a gun in the home. Yes? Okay, go grab it!
Why wouldn't that be his very first question?! Not waiting all night to ask it. LOL