Results of trying to remove the Wisdom headband: Asmodia's pulse sped up, but she didn't awaken. Putting the headband back on brought her pulse down to its previous slightly-fast state.
Results of requesting Asmodia's last minute of memory removed: Items of Modify Memory are not cheap, and Cheliax also doesn't have that many 4th-circle government bards lying around, plus they're at the front doing area-affect bard spells. They'll add it to the next requisition packet, though, the palace might have something. Asmodia admittedly does have a priority "do not lose this person or incredibly bad things will happen to you" marker on her from Aspexia Rugatonn.