And there she is. Ford freezes, but only for a moment. As uncomfortable as it is, having someone else literally on board as backup is actually pretty helpful. Ozpin's insistence that a 'simple reassurance' will be enough is met with deep skepticism, but also something that can only be described as earnest hope. He really, really needs a simple reassurance to be enough.

(He also reflects, with an amusement that's not directly on but still within sight of the border of hysteria, that Ozpin did as instructed and sighed exactly once.)

"Everything is fine, Ruby." Ford is only so-so at direct lying and impersonating people, but for a single line he doesn't need an abundance of skill in either area.

That's the same reason he leaves it at one line, even though he knows it won't be enough. He needs to stall for a better excuse.