I bet it was a mature dominant doe, pissed at the thought of some other doe in heat in her territory that two bucks were fighting over. I've had something similar happen before when breeding in a particular area wasn't happening yet...

I bought at Wood's Wise Breeding Bellow call a few years back, the first year they offered it. Supposedly makes a severe doe in estrous I need it now sound, I practiced with it often.

On an early season hunt, a few hours before sunset, it was nice and calm. I knew breeding was way off, but I couldn't resist giving the call a try. I pulled it out, hit a few estrous bleats, then let go with the bellow... All hell promptly broke loose.

A mature doe came crashing it, and she was pissed. Her hair was raised, she looked like she was snarling, hell she was mad!. Of course she charged in dead downwind of me, and busted me (I had forgotton my scentlok and decided to hunt anyway). She promptly turned, and stomped away back to where she came from, her bedding area. It was a riot...