A lot of people are calling Shura stupid, but I can't really agree with that? She's a coddled and sheltered kid who's probably like... 10 years old, mentally? The thing Baal rescued her from was probably the literal, actual, indisputable Worst Thing To Ever Happen To Her In Her Entire Life, and with such limited worldly experience you can't really blame her for not seeing through it. Especially since Baal is good at manipulating people! It's hard for ADULTS to catch him on his bullshit (after all, he's gotten into a position of major political power) much less some kid whose probably never even been lied to before (because who would EVER lie to a deity).
Basically she's "stupid" not out of ignorance or foolishness, but just naivete. It's not that she refuses to learn, it's that she's never been taught.
As I type this, I realize: she has to have like, attendants, tutors, family, SOMETHING??? keeping an eye on her, right? Where are the deity adults going "Your Highness... this Baal is not to be trusted... Do not let him sway you..." who is letting this happen??? What is going on with deities???????????
But yeah my point is the real issue is that she's even been given this position of power in the first place by the structures of deity and demon society. If it didn't happen to her, it would've happened to another young deity since apparently no one bats an eye at giving them a ton of power and then not safeguarding against manipulation. For some reason. Seriously what is going on.