"I'll go down to check."
The moment Medb let Ritsuka know her intention, she quickly snatched the bag from Ritsuka's hands. Her Master wouldn't be able to go down the ladder with luggage to carry. She jumped down with the Grail-collecting bag in her hands.
Hearing Ritsuka and Aisha scream behind her, she softly kicked her heels on the rocky walls to slow down her fall, landing smoothly. She put the bag on the floor and looked up, seeing Ritsuka and Aisha's flabbergasted faces.
(Oh, right, Ritsuka doesn't know I'm a Servant. I mentioned it in the basic explanation, but she doesn't know what a Servant is. Looking from down here, this place really is pretty tall. Nothing for a Servant, but a normal human would hesitate to climb down even with a ladder. If the rope snaps somewhere along the way they're definitely not surviving that.)

- Chaldea Case Files: Caged Girls