We were hunting in the country around Pelham Knoll, Antelope Springs, and the basin around the Pollywog Lake area. In fact, your wife's pronghorn looks alot like the one my boy wanted to hunt for after our previous day's scouting efforts in the freezing rain, intermitent fog banks, and brisk wind gusts found a very similar looking buck hunkered down in the sage with a herd of does. He was a bit north and west of Pelham Knoll at the time. The way your wife's buck's prongs kinda jut upward is unique and his mass is better than most of the bucks in that unit.
There was also a buck we named "Limpy", because he had an obvious limping gait, who had an impressive set of horns that were tall and had good hooks and better than average prongs. We looked for both of these bucks in the morning but with all the shooting and harrassing going on, the herds just seemed to get so scattered it was difficult to find specific bucks.
I'll tell you a funny one...we encountered a nice enough fella out jogging across the sage chasing a herd with a buck we were stalking. He was a bit out of breath as he flagged us down, thinking we were someone from his hunting party. He was in a camo jacket, blue jeans, no cap, no blaze orange on head-back-chest, and...he had an unloaded rifle! In his haste to get after the bucks, he'd forgotten his ammo! Folks just get that ol' buck fever and it takes over their sensibilities, as hunting with an unloaded rifle will attest too.
Here's a pic of my son's buck. He made a fine one-shot kill with his .30-06 Savage rifle birthday gift he'd received from me in honor of his birthday, which is today. He hit the buck in the neck and the creature went to the ground with all life completey gone from his body. We hung him in a tree and skinned him so my son could have the hide tanned as a trophy from the hunt. We'll do a european skull mount and eat backstrap steaks and antelope burritos from the fine meat.
We saw mule deer bucks and does, 5 flocks of turkeys, a herd of elk with a 5 point bull, and lots of ducks and geese along with all the pronghorn. It was a good hunt in a handsome chuck of high country.