I don’t know if I’ve already shared this and if I had, sorry, but consider: past morally questionable Misako (I’ll preface this with: this is not a Misako slander post. I like her and just because I hc her as a flawed person doesn’t mean I think she’s bad as a character).

Misako but she herself was raised by Darkley’s boarding school (or associated groups). Her love of research and questing originated from being tasked missions to steal magical artefacts. Her interest in the spinjitzu bros was originally a mission to glean information about the elemental alliance and spinjitzu from them, which is why she was quick to accept the letter and why she was fine with having an evil partner.

But over time, her relationship with Garmadon changed her perspective. She saw how he struggled against his own evil, and how he still strive to be a hero in spite of it. They bonded, finding that they had shared experiences and she began to see more in the world and even became excited to start a family with him. He helped her learn to be good. And so when he succumbed to evil, Misako fights to return the favour.

Misako accepted that on her own she didn’t have the skills to look after Lloyd, she might not have even had a good parental relationship herself, and so turned to the people she knew, Darkley’s, as it was essentially the only connection she really had. It’s not the greatest option but she lived through it so (Ik it’s a boarding school for boys but idk maybe there’s another school somewhere else, or Misako is trans idk).