It’s actually not that uncommon to get stuck during the writing process. In some cases, it’s the dreaded writer’s block. But others you know exactly what you want to say, but you just can’t get the words on paper in a way that make sense. If you face this particular problem, here is what I recommend.
Take the last few pages of the story, print them out if needed. Then find yourself a nice, quiet spot where no one can hear you, and read the words out loud. Read just like you would to your child: change tones for the dialogues, and make the reading as interesting as possible.
It’s not as far fetched as it sounds, I suppose. When Lisa and her brothers were all spotted to have language delays, we were told to use sign language to help them out because the visual signs would help with learning and eventually understanding the words. So I guess the other works just as well, hearing the words will help you visualize the action and in turn see what you need to do to move your story forward.
I actually use the same technique when I get frustrated writing something I just know does not sound right in my head. I have no compunction just reading out loud right from my screen: my partner and my children are used to me talking to myself and I have no trouble blocking out the sounds of the radio or the children playing. But as I said, finding a solitary and quiet spot is probably best.
Feel free to let me know how this little tip works out for you in the comment section.