Also she could be playing you, I know... a woman playing men.. whodathunkit. I dated an INTJ who was doing that to me and a few other guys and GIRLS. And she was always late too, always had an excuse for why she couldn't answer the phone, always just missed me, etc, things she didnt think I picked up on, but did instantly.
Protip: a lot of females who claim they are, or even test as, INTJs are really not. I've known to occasionally be slightly late for casual get-togethers, but never this often. It sounds more like NP-behaviour of some kind.
Wow! I'll have to say that reading this thread is like being in a Twilight Zone episode. INTJ late all the time? ENFP complaining about it? Move over Rod Serling.... we have, ladies and gentlemen, entered the Twilight Zone.
I'd say talk to her. Perhaps she's not adequately considered how her actions are affecting the people around her. Noooo. No INTJ would ever do that....no sirree bob.