In the end, whether I write the script or, in this case, somebody else did, there's a point where you let it go when you're making a movie. You just have to. The thing that you shoot is not what you imagined in your head - it never is exactly that. And it shouldn't be.
Once you are shooting a movie, even if it's your own script, you have to let it go at a certain point. That's true for every film. It breaks up into phases where the thing that you have in front of you is the thing you have to address, and you can't worry about what you imagined a scene was going to like and that it came out differently, because that's what you have to make work.