In your case, yelling into your ear would result in nothing since there's nothing to reverberate.<quoted text>
Yes. She could yell into your Left ear. The returning echoes would be reminiscent of a gated Solyndra factory, the Magic Negro's hollow rhetoric and the vacuous halls of the White House where the Founding Fathers spiritually weep nightly.
Have you contacted NASA? I'm sure they could use your emptiness as a cheap surrogate space simulator!