First of all i just want to say hey to a fellow PA hunter, I live and hunt right over the mountain from you, in Huntingdon.
Anyway, tought break, sorry to hear about the tracking. So you were using the expandable blades then?
From what you are saying it souns like you nicked a lung, but after tracking for that far if it had beed a double lung, then it would have been dead by then.
Same thing happened to a girl that was hunting in the gang i was with during early muzzleloader. She shot a doe, 30 yards broadside with a muzzle loader, it ran past me limpining, with blooding coming out of a nice side shot. Fell down twice, but kept going. The blood we found was bubbly like yours, and almost white in some spots, but after tracking for well over a mile, we had to abondoned the chase because of daylight and lack of trail.
Wish there was more I could do or say, but I guess that is just part of hunting. You made a sound, ethical shot, but as luck would have it, things didn't go your way.


Jennings Buckmaster Bow
.50 Cal Thompson Center Renegade