"Do you need help with that or-" The stallion didn't get to finish his sentence, as the mare blasted off the top of the coffin without much ceremony. The singed wooden lid, or what remained of it as a sizable portion had been replaced with a charred smouldering hole, flew off and landed on the ground several metres ahead, further breaking as it fell over a headstone. The metal lining that had held it to the rest of the structure was sizzling. All three ponies looked inside, without waiting to chastise the mare for her actions.
"Ah fuck," the other stallion said as he saw the contents. "There's actually a pony in there. Fuck." He stumbled back, and fell on his haunches. "We really dug up a dead pony," he whispered in shock.
"Relax." The mare's horn lit and she casually picked up a bone with her magic.
The first stallion looked at her, more than a little bothered. "Hey, what are you doing? These weren't the-"
The mare hushed him by placing the tip of the bone on top of his lips, making him recoil in disgust. "Shush you, and use your brain for a moment." She held the full bone up in front of him. "Notice anything weird?"
After sputtering out a little, and after forcing himself to calm down, the stallion looked at the bone properly. "It's..." He tilted his head to the side. Something was off. "It's too big?"
"It's way too big," the mare said. She twirled around to show it to the other stallion as well. "There's not a single bone in a pony's body that's this long." She held it with one end to the ground. It was almost taller than her horn, and definitely much past her shoulders. "This would be oversized even if we were talking about Celestia's legs, and she was a common pony." She laid the bone down and picked up a few others. "This is not her skeleton. I don't think there's a single bone here that belongs to a pony, and there are no hints of rotten flesh or anything else either. They threw in something to fill the coffin, but now we know for sure she's not buried here." She smiled. "It's not yet confirmation that her death was completely faked, but it's damn strong evidence."
The two stallions looked at each other, regaining colour in their complexion. "So what do we do now?" one of them asked.
"Well, we keep this stuff." The mare lifted up all the bones with her magic. "You find a way to dispose of the coffin. Fill the hole back up, and make it look good, I don't want anyone to figure things out." She began to head away. "I want to figure out exactly what they put in there, that might give us a lead of some kind. Not everyone has easy access to bones."
The two stallions looked at her go, then at each other. Then they sighed. "You fetch the coffin," one of them said. "I'll start with undoing all the digging."