From The Incredibles entry:

(Played more realistically than the usual, since her Heel Face Turn comes not through falling in love with the hero but more sensibly through realising that her villainous boyfriend/employer doesn't actually care if she lives or dies.)

• I see Mirage as a Punch Clock Villain who didn't realize at first that the project she was working on was truly heinous. Her Heel Face Turn actually begins when she learns that Syndrome has no qualms about killing children.
• Well she was complicit in the deaths of dozens of superheroes - and if her conversations with Mr. Incredible are any guide was cold blooded enough to happily chat with them beforehand (making her talk of "valuing life" a touch hypocritical).
  • Well, yeah. But superpowered adults with a fighting chance are not quite the same thing as shooting down a plane with supposedly helpess children, is it?
  • Not really since the 'fighting chance' is pretty much 'if you're good enough to beat it we'll build a stronger one that will kill you'. She also didn't seem care that the robot might kill plenty of children (or other helpless, non-superpowered people) in it's ramapage across Metroville. She's evil, and complaining about the children only makes her an evil hypocrite.

It's conversation in the main page, so i'm putting here (but leavnig the example on the list). The back and forth adds nothing to the actual example.

Just an observation on the Avatar: The Last Airbender entry - Ty Lee is more of a generic Heel Face Turn than a High Heel Face Turn since there's no "redemption romance" involved. Mai is the only one who fits this trope, being that she never really seemed to resent Azula until Zuko became a factor.