rises the moon

You engage with the spider, asking what is wrong. You don't know what you expected, but surely not a shrill voice calling, "The vibrations! The tremors! Food everywhere and nowhere in my web!" It seems that there is some sort of vibration causing her to become confused and attack anything that wanders too near.

While you discuss with the spider, the guide frees the family and makes it back to safety. After you finish talking to her, you join the guide in a safe place.

The inhabitants tell you of something causing the tree to vibrate, which is making the spider's web give her false signals. This has become confusing for her, and the once guardian of the tree has been blindly attacking anything she finds in her web. They explain the vibration comes from underground and show you to a hatch in the floor that leads to a cave.

The cave is small and seems fairly fresh, with loamy soil still clinging to the roof and walls like a newly dug den. It is dark, but your eyes adjust and you see a series of paths you can choose to take.

What do you do?