Trowa bends his knees, sinking into the wobbling wire. He's got enough practice to make this look effortless, or as effortless as anything involving such a narrow balance point can be, but he exaggerates his technique just the slightest bit for X. If she's got attention to spare for watching him, it might be of use.

Not that she isn't well on her way already.

When she lands and looks up, Trowa returns the nod.

Well done, X. (She doesn't need his assessment. But it's there.)