Grand Theft Me: Thanks to Terra's suit, Slade can control her powers as he pleases, or stop her from leaving.
Heroic Second Wind: Terra gets this right as Slade compels her to kill Beast Boy. She proceeds to fight him off and toss him into lava. That was a long time in coming.
Heroic Sacrifice: Terra uses her powers to stop the earthquake, which turns her into stone.
I Cannot Self-Terminate: Terra, thanks to the neurosuit. She asks Beast Boy to "destroy" her when he confronts her.
I Regret Nothing: Terra's opening monologue, though her tone and flashbacks obviously signals that while she says it outloud, she still obviously wrestling with herself if her decision was right or not.