Disclaimer: Inuyasha and its characters belong to Rumiko Takahashi and her creative prowess.
Step 1: find help.
Step 2: get "help's" attention.
Kagome reached out to tap his shoulder, and fell straight through him.
After some re-adjustments; the watcher smacked her forehead in frustration. She can't touch him! Nor can he hear her…hmm…
I need a rock!
Floating a couple hallways to the left had her in the stone garden. Grabbing a larger one that fit in the palm of her hand, and multiple smaller ones, she crossed her fingers before rejoining her unassuming companion.
Taking the decent sized stone, Kagome took her aim.