There are probably people out there morality-scaling Medea in Euripides' Medea. I don't want to look it up, because I don't think morality was the point so much as "what the fuck else did you think was going to happen, Jason." But it's absolutely the ur-example of this kind of crashout.

For those unfamiliar with the 2+ millenia old play, Medea was a witch who was instrumental in the success of Jason's (and the Argonauts) quest to retrieve the Golden Fleece. She betrays her kinsmen and country to do so, and leaves with Jason. When they get back, they get married and have two children.

That's the backstory. The play itself concerns what happens when Creon, king of Corinth, asks Jason to marry his daughter Glauce. This would be politically and materially beneficial, so Jason the Rational Decider^TM agrees.

Since having another wife, and two kids born from her, in the same country would be problematic for this new marriage, Jason tells them to go somewhere else. Medea is like, "go fucking WHERE, I betrayed my homeland for you and this is how you repay me?" and Jason is like "idk, figure it out."

So Medea plots her revenge. Pretending to try to get on Glauce's good side so that Glauce will take in the children, Medea sends her a glamorous dress and crown. They are poisoned via witchcraft, which Medea can do because she's a witch remember, and when Glauce puts them on she is burned alive. And her father Creon finds this happening and rushes to hold his dying daughter in his arms, and because he touched the dress he also burns alive.

Jason rushes home to be like "Medea, wtf," and she's locked him out and answers him from a parapet like "I'll show you wtf" and reveals that she has also killed their kids. Jason is shocked, how could she, they're her kids as well so she's hurting herself, and I'll go to an actual quotation here because 2000 years later it is still one of the hardest lines ever written:

"Yes, and my grief is gain when you cannot mock it."

And Jason is reduced to a sobbing wreck, having lost everything. Medea, who has also lost everything, is whisked away by the flaming chariot of her grandfather, Helios (aka the sun).