Place a bunch of rocks on her coffin

Maybe some women in a situation like this would sit around and wait to be victimized, but Sabine St. Croix is not one of them.

You search around for any heavy items you can find. Rocks, logs, large branches, … and piled them on top of Keyla’s coffin. She may employ magic that prevents her coffin to be opened, but that does not prevent you from finding a way to keep it closed. You just hope you’d be fast enough.

As the sun disappears beyond the horizon, the shadows grow longer and the sky overhead darkens. In the east, lights begin to spring up. Stars signaling the approaching night. You hurry to the cart with a big rock you just pulled up from the side of the road, when you hear a thud coming from Keyla’s coffin.
“Sabine?” Keyla’s muffled voice asks.
You throw the rock to the side and hurry up to the cart. You throw yourself on the coffin, hoping your weight will be enough.
The lid thuds again and you hear Keyla once more.
“Sabine, are you there? This isn’t funny. Let me out.”
“And allow myself to be your next meal?” You call back at her. “Thanks, but no.”
Keyla realizes her predicament and tries harder to open her coffin.
“It doesn’t have to be you specifically, Sabine.” Keyla explains. “It can be anyone. I don’t even need that much, nobody will die from it.”
“There is no one else around, Keyla.” You reply. “If you get out, you WILL feed on me, and I will not allow that to happen.”
Suddenly Keyla hits the lid so hard, it causes a few of the rocks to fall off, and she screams, “GOD DAMMIT, SABINE, LET ME OUT OF HERE!”
Keyla keeps hitting the lid with her hands and legs. You feel pressure coming from the top half of the coffin, then the lower half. At times the coffin opens just a little, enough for a finger to get trapped in if you aren’t careful enough.