Sad,But that's how the Hierarchy of power is in Gensokyou Aya

For Marisa or Reimu, anyone who gives food is accorded the honorific 'Great.

I assume that Aya is just trying to understand that an Idol like Megumu gifts Marisa and Aya is someone that the great tengu doesn't realize that exists.

Hatate RULZ, M8

"It goes from God, to Jerry, to me."

Aya said: This is the World of the Backdoor, a full frontal assault with your best forces should render their military incapa-*pichun*