The spider gave an unearthly screech. One that was horrible enough to scare Fili into sheathing one of his swords, before Yavanna's scream became enough for him to clear his vision. Only to see her terrified face, he gave a yell, and sliced at the spider that was proceeding to wrap her into a cocoon. To hear the princess scream, Saeril acted fast. 

Once her wings unraveled themselves, she flew herself towards the spiders. Agile maneuvers like any other elf, her dagger and sharp finger cuffs were her only shape-weapon, as she killed off part of the pack that proceeded from the tree tops. Slicing at the spider that was dragging Kili off, the winged she-elf kicked at the arachnid, until she felt the pierce of another's stinger.

She gasped as the penetrating object hit her left arm. Numbness went through her body, almost as if she was stiff inside out (almost like her arm fell asleep). The injury on her leg was healed, but this was another injury she would have to fight through. She couldn't momentarily move, while under the effects of the spiders' poison in her bloodstream.