Exaggerated: From the moment she met him, Lumina has constantly been manipulating, tricking, and practically torturing Sol and the others, deliberately sending them into dangerous situations with the wrong ideas or information, putting their lives at risk — but it's okay because she 'knew' they'd survive those trials! What doesn't kill you makes you stronger, right...?
Lumina actually does have a direct connection to her patron Goddess, and everything she puts Sol and the others through is destined to make them strong enough to save the world.
Or, "Lumina" is that goddess, or and aspect of it, or its herald, or incarnation, and thus its the Goddess challenging them directly and being a goddess, she is nigh perfect.
Inverted: Lumina tells Sol and company to avoid going on a dangerous mission despite knowing they'll come out alive.
Sol calls Lumina out on her nearly getting his party killed by being so damn cryptic all the time.
However, Lumina justifies this by pointing out how much stronger they became after that trial, and he lets her off the hook.
Lumina retorts against or ignores the omnipotence paradox and sends the cast on their merry way, while pointing out that the reason they came here in the first place was to seek her omnipotent guidance.
Zig Zagged: Lumina is generally straight with Sol, but misleads him about a few key elements of his destiny, not wanting to let him know certain unpleasant details before he's ready for it. When some of these details surface, Sol lets it slide, because he trusts her and figures that she knows what she's doing... but some of his companions aren't so trusting or willing to give her a free pass. Then one Fetch Quest goes particularly bad, leaving Arte mis and Hoshi seriously wounded, and Sol snaps into full-onRage Against the Mentor mode. Stellar, however, takes Lumina's side, arguing she has an Omniscient Morality License. Sol doesn't buy it.
Averted: Lumina is humbled by her Goddess' blessing of prophecy and strives to avoid misusing it.
"Instead of telling us of the grim misfortune that will befall us on our journey, why don't you draw us a map, with said misfortunes clearly pointed out, as well as methods to avoid and/or defeat them?"
"How about I just say "To hell with that noise and set things right without you shoving those fates down my throat?"
Invoked: Lumina's patron is actually a demon masquerading as a goddess, misleading Lumina into believing she is a blessed prophet and therefore justified in sending Sol and his companions into danger "for the greater good".
Lumina, aware that she might grow too prideful and come to view herself as infallible due to her gift, sets up a council of trusted, level-headed confidants with whom she can discuss her visions and decide the most prudent course of action.
Discussed: "I have no idea why we have to put up with Lumina after all of the crap she's put us through just to get to our destiny."
Conversed: Hold on. If Lumina is omniscient, then couldn't she explain to Sol exactly why she's doing something and use her limitless knowledge to convince him.
Lumina becomes so convinced that everything she does is justified by her abilities that she begins to stray into A God Am I territory. This angers her Goddess, who punishes her by cutting off her powers.