Great movie with a lazy 3rd act

Rating: 7/10 (7 March 2017)

Most users have already written all the pros for this movie so I won't go into explaining the good sides. For the most part I really did enjoy the movie and it is by far the best in the X-men franchise. BUT, am I seriously the only one that has a problem with the transition to the 3rd act of the movie???
I mean, for the first 2/3 of the movie, X-23 is set up as a character that is basically a savage, raised in a facility with no understanding of the outside world (just like the other kids there), she doesn't speak, she doesn't understand that killing someone because he asks you to pay in a shop is a bad thing, she is just learning how the world works by watching TV and listening to an iPod.
But then all of the sudden, not only she can talk, but she speaks 2 languages, drives a car, understands GPS coordinates, understands the concept of taking a man to a doctor (and finding one), knows how to survive in the wilderness, understands the concept of good and evil (explaining to Logan that she only kills bad people) etc.
And on top of that, all those Peter Pan-lost boys kids... how the hell did they get there all on their own? If they could do it, why was Logan needed to drive Laura there? How do all of them know how to function in the real world when they were also born and raised in a facility? All they needed to make it look more plausible is to put 1, just 1 adult among them. A nurse, a doctor that helped them, anyone could work.
It was all a great, realistic, grim story with even some interesting philosophical moments, but at the very end for me it just drifted to a deus-ex-machina ending.