I actually have appreciated your discursive analysis and it is fun too.
I think in regard to Jill, she is impressionable, a do-gooder, pretend white knight, admits she is stubborn, and yes can be painful at some times.
Although, I give her some credit for; stopping to see if MC was OK with the wedgie, defending MC against Bella's initial hate of MC; standing up to Tybalt when MC got bashed to take care of him; giving excellent personal advice to MC at the beginning of the tennis date. Helping out Josy. Caring for Cathy's welfare with the nude photo issue.
Although, I think the big shock to her attitudes was when MC saved her at the recital. I think that was an important watershed moment to trust MC.
I get it. She can make some bad decisions. But given her renown "naïve" trait, I suspect there are opportunities for her to change. MC indirectly gave Jill courage to verbally crush Tybalt. That has to count for some growth.
Of course we will see and a DPC plot can deliver anything; including fire.
I don't expect everyone to be perfect and if I was judged on all the dumb things I did when I was young, I wouldn't score very well against some of the characters.
Also on the MC-committed to Jill path, I don't think Bella will allow her to do something really stupid.
View attachment 1834103
WHAT SHOULD JILL DO?
1. Order a Pizza, (extra cheese and peperoni)
2. Yell, "Fuck me!!!! FUCK ME!!!) over and over again so the whole DIK house hears it.
3. Get the fuck out. (MC is finished...GO!)
4. Tell MC she wants to taste all the nutbutter.
5. Bark like a dog.
6. Now that she is MCs girlfriend, lend him the keys to her car. He has to "work" at the Pink Rose".
7. Call Bianca and hand the phone over to MC.