You decide to don't test your luck with the werewolf, and you continue through the tunnels.

You advance and after some minutes you start to watch huge cocoons, human-sized cocoons made of spiderweb!
You listen to the sound of a woman humming a tune, soft and sweet, but at the same time, creepy...
The melody floats through the cavern, it's beautiful, but there's something unnatural about them, as if they belong to a dangerous creature trying to lure her prey. The sound sends a shiver down your spine.

And you are right, a HUGE brown spider with the torso of a beautiful woman emerges from the webs, but she didn't notice you.

You can hide in the rocks between the cocoons.
You can run as fast as you can.

What do you do?