There were two things that Shadowheart had told you about herself that you kept locked in your mind. Her favourite flowers were night orchids, and she couldn't swim. Those were the two things she'd told you about herself when you'd asked to get to know her a little better. You'd remembered them ever since.
So when Shadowheart had suggested walking across a withering wooden dock to retrieve a key that a goblin had thrown away, alarm bells immediately rang in your head. You needed the key to get to the next area, and the half-elf insisted she could get it. Even though the dock looked like it was a gust of wind away from collapsing under her weight.
You stuck nearby, keeping an ear out for any sounds of snapping wood. The dock creaked and groaned with every shift of Shadowheart's weight, and you couldn't help but feel on edge. But you didn't say anything, taking to looting the corpses of the goblins you'd killed.
Shortly after, you heard Shadowheart's voice call out to you.
"I've got it! I'm coming back."
The half-elf began tentatively making her way back. But all it took was one wrong step. Shadowheart froze, her body tensing as the dock gave an especially loud groan, accompanied by the sound of snapping wood. You looked up, shouting for her to run, or to use a scroll of misty step to get back, but it was too late – Shadowheart's scream was cut off as she crashed under the water.
The cold seeped into her bones instantly, shocking her system. The panic was what hit her next. Her eyes flew open, stinging from the water. Any sense left her, and her body flailed and writhed around, trying desperately to get back to the surface. But it only drove her further and further down, and she couldn't even tell which way was up anymore in the darkness.