"Steady on," Ianto says, a little surprised - he definitely did not dream up a somewhat frantic woman - but generally reassuring as he puts his hand over hers, reflexively supporting her. In dreams, he doesn't need his cane, and he can hold up Greta just fine without its aid, which is probably the only upside to dreaming. (Downsides include being in the dreaming again.) He glances at the canyon below, looking mildly impressed by its depth and general ominousness. "Nasty drop."