I've noticed an issue with M'naago's response for max/highest tier collectables--every other custom delivery NPC uses "excitedly accepts" whereas M'naago uses "eagerly accepts".

However, "eagerly" is what is used for her and the others for lower tier deliveries. This happens for both DoH and DoL, but doesn't affect the rewards.

As a comparison (both were on bonus):
Margrat:
[7:31]You obtain 270 purple gatherers' scrips.
[7:31]You obtain 180 orange gatherers' scrips.
[7:31]You receive 2,505 gil.
[7:31]Margrat excitedly accepts your delivery.

M'naago:
[7:40]You obtain 270 purple gatherers' scrips.
[7:40]You obtain 180 orange gatherers' scrips.
[7:40]You receive 2,505 gil.
[7:40]M'naago eagerly accepts your delivery.