You down the potion. It tastes bitter, but not unpleasantly so, with a slight burn to it.
"Well…" She thinks. "Not being downed by dead weight is a start."
As you try and make sense of that, your legs suddenly give way, and you fall painfully to the floor. Your body refuses to obey. You can't move, no matter how you try.
She grins. "Don't worry. It wears off after a minute or so. Just enough time to see what you're carrying."
You can't even talk due to the poison, forced to stare as she rummages through your belongings. She frowns in disapproval. "No weapons, barely any gold, only a smattering of rations… The world hasn't been kind to you, has it. Then again you probably deserve it. Taking drinks from strangers and all."
"Ah! Here we are!" She pockets the gold and the emerald you'd found earlier. "Ought to be worth something. Wouldn't you agree?"
She crouches next to you. "Tell you what. You want your loot back so bad, come and get it. I'll be around. Maybe."
With that, you are forced to watch as she turns tail and dashes off into the shadows, leaving nothing behind. At least you kept the Prism Stone hidden.
After a while, your limbs start to respond again. Despite only being about five minutes or so, you feel incredibly stiff and sore. Your legs especially. Other than that, you're okay, for now. No sign of where the thief went, though.