what Quinn really wants to do is very unclear.
Does she want Maya in the restaurant? Is that why she decides to make her hate her? How is she going to convince her to do something so extreme?
in quinn's plans maya is supposed to fail the scavenger hunt, how convenient would it be to have a restaurant girl out of HOTs? Maya would be the only one in that situation
So maybe the scavenger hunt is a test to see if she's really motivated? But then that doesn't explain Quinn's subsequent behaviour which remains highly aggressive towards her.
I still think Quinn took an interest in MC at first glance. Each time she sees MC and Maya she says something like "Barbie and Ken" etc. so jealousy might've played some part there. At least initially.
Add that the fact that Maya is nowhere near a girl who'd be interested in being a HOT, she just wants the free tuition. She is definitely not a partying type. That may have pissed her too.
Imagine someone trying to get close to you and your group of friends because they heard you give money away. And that someone doesn't even hide that fact, asks 7/24 about money.
You ask them to do something. She asks "if I do that I will get money, right?"

When that happens to a mean person like Quinn, well she'll mess with her for sure.
Additionally, I don't think Quinn made that list because she was only being mean to Maya. I believe she just wanted her to give up (every other daughter as present at the DIK party but nobody asked Maya to come, remember?), but surprisingly she started working for the list and that pissed Quinn off more.
Like, every other girl in HOTs likes to party, or was interested in being a member of a sorority. Even Josy. Maya? She literally calls them "sluts" right at the beginning of the game

Obviously looks down on them too.
I don't think the HOTs would fail to notice that, so she'll walk a rough path from now on. Hopefully she'll move on and try to enjoy her life in HOTs. I doubt that but hey, I also hope that. We already have enough drama in the game. It'd be fine if we stopped living through drama for a while