Pastucci wrote:
My theory is this:
In the hallway before the Boss fight, there is dialogue of James visiting Mary in the hospital, he had brought her some flowers and she isn't very happy about it.
" Flowers?! I don't want any damn flowers! Look at me, I look like a monster"... ( I'm paraphrasing)
So the glass breaking could be the vase that the flowers were in, symbolizing Mary's suffering and frustration, as well as James' pain of rejection.
That's really interesting, makes sense since it was in the hospital. I am not too for sure why they did add the glass breaking, maybe a homage, a jumpscare for those not paying attention, or could be more to the story. I am not too for sure, but that's a pretty cool theory.