She slips deeper into the dark cave, the only lights she can see the glowing trail of the quest marker she was following, leading deeper into the cave; but she can't risk raising a light, lest she warn the goblins she's coming. As such, she doesn't notice the stream, until she steps in it. The rocks are slippery!<br/><br/>(Make a DC 10 Acrobatics to keep your balance and stay standing, or else fall in the water, and redo your Stealth at a -10 penalty.)