"No... I should've known you wouldn't." It's never been in her nature to run away. Sora just exhales, shaking his head a little. There might even be a hint of a resigned smile.

Time for him to perform the ceremony. To say the words, to pass on the keyblade. If she'll fight, it'll be with a fully realized weapon.

"In your hand, take this Key.
So long as you have the makings, then through this simple act of taking, its wielder you shall one day be.
And you will find me, friend—no ocean will contain you then.
No more borders around, or below, or above, so long as you champion the ones you love."

And it's as simple as that. When Sora finishes, Ami may feel the transfer of power, may feel just a subtle shift in energy. But this particular keyblade now belongs to her. It's hers to wield, and so is its power.