I'd like to get my light to bleed through the window and create a soft edge effect around the window frames. Here is an example image I found that shows my desired effects. The light seems to pour in and wrap around the window frame.
Here is my render (this is not a final version, only 100 samples to show my example).
As you can see, my window frame has very hard edges to it. I've tried turning up the outside lights, painting the window white (as opposed to dark wood), added portal lights, tinkered with the exposure, etc. I even tried volumetric scattering in the environment but this creates too much 'haze' in the entire scene. I really only want that effect around the window.
Here is a link to my blender file. I'm still very new to Blender so any helpful advice would be appreciated.