Also I'm annoyed about her contribution to the continued poor health of Oz. The character, not the actress, but it bleeds back over into my feelings for Michelle... Glinda didn't need the Wizard and hadn't needed the Wizard for years since their father had been usurped and her name had been ruined as a wicked Witch by Evanora's masterfully laid propaganda.
"She had the power inside her all along"
The difference between Dorothy and Glinda is that Glinda is perfectly aware about how a bitchfight between she and Evanora would go down, there was no doubt or denial or ignorance... There is no earthly reason, I mean, Ozly reason for she to allow Evanora's despotic rule to continue if this Good Witch knew that she had a 50/50 chance of winning out the final battle.
Only the Sith believe in Absolutes.
Of course if Glinda just sucked up to Theodora, victory would have been certain, but no, Blondy decided to wait for the prophecy of a Wizard to come to fruition and save them all at zero risk to her safety no matter who Theodora zapped into cinders.
Prophecies are balls.