I agree but I don’t like how you worded it. I mean it’s true she was sheltered and only had her brother but, idk
I think I provide more informative argument regarding this. Firstly she was and is still being brainwashed by white, she was brought up like a child and treated like a child. Education on subject doesn't necessarily relates to being emotionally intelligent. This argument on why she so oblivious or so dense, can be clearly vindicate when you see how the character interact and treat as a child. Not to mention who has ever told we anything regarding on their feeling or even just express it. Like unless you can mind read or like us readers, she lack the context to understand. She not willingly being ignorant, but no one has given her a chance to even face reality but build her dream world by stacking up with lies. Honestly hope this helps in at least understanding on why she is being the dense character.
Jenette was sheltered her whole life so of course she’s not gonna be as quick with noticing things— what is she 14? All she literally wants to do is be happy(AFTER THE DEATH OF ALL HER FAMILY THIS GIRL LITERALLY HAS BEEN LONELY HER ENTIRE LIFE SHE COULD NOT GO OUTSIDE AT ALL CAUSE OF HER EYES) and y’all actually hate her to death— go off ig psychopaths