Did you guys stretch uncomfortably in your seat, too? It was fine for 30 seconds or so, then it just stretched on and on with her bleeding for minutes at a time. I was like, "we need to watch THE WHOLE THING?"
Further more, I was hoping that he wouldn't kill the bad guy's sister.. she's somewhat innocent. I felt bad that she had to commit suicide .. and to top it off, he shot her in the head while she was dead? that's just mean.
John should have found another way to get out of that marker... Alas.
I find this scene to be one of the strongest in the film. It’s slow, quite, a bit uneasy to watch and just feels relatively out of place compared to the rest of the film. And, it is done so effectively.
Now as Giana wasn’t going to be given the option to live, she chose to take her own life and perhaps save Wick from this one sin. At the same time, one could argue she wanted Wick to witness this closely - and slowly - to maybe have him question if this was all really worth it (mind you, John was clearly disturbed by what Giana decided to to). John eventually decides to shoot her (whether she was already dead by that point or not is beside the point) because it was his marker that he had to fulfill.
Leading up to her death, she asked Wick if he feared eternal damnation to which answered yes. She said that she thought that she would avoid damnation. She is Italian. She is probably Roman Catholic. Suicide is a sin and she would have ended up in hell.
John has already commited so many sins and is going to hell, anyways. By shooting and killing her as she was fading, he spared her from damnation, at least for this particular sin.