Why not fire instead of water?

She doesn't have a skill to burn them and she can't lead them to the layer where there is lava because they would know what she's trying to do and stop chasing or there's a chance that the spiders inside aren't affected by the heat because of the puppet "armor", also even if she tries to teleport them with her, she would have to be close to them but she can't, they're faster than her and would kill her(even though she cannot die)