Quartering to you shots are never a good idea. I personally have never seen one work out. And if you say there isn't any bone there well I don't know what to tell you. The shoulders, breast plate, scapulas are all in that area. You only have a baseball size hole to shoot through if you are shooting the front of the deer. If you are trying for the heart on a quartering to deer, you have the shoulders and leg bones blocking you. Low percentage.
Good job on not taking a risky shot.