$25-30K BUT she would love to get cheaper is what you wrote.
Good luck to your daughter. My only concern again - is your OOS publics. Unless you’ll qualify for need (only UVA and UNC meet) or plan to go for Moorhead-Cain, there’s no reason to apply to UNC. I’d say the same with UGA unless your budget figure has a lot of elasticity.
That’s why I mentioned Alabama, UAH - you might find others with huge merit that meet her needs. For example, Alabama has Randall Research. UGA is most certainly not going to meet your costs. Nor will UMD - I mean, they have Banneker Key but again these are home runs, not realistic for 99%. W&L is a home run too - I mentioned not because it’s right per se but the Johnson is strong and reasonable in that they award it to 10% of admitted and have other full tuition on top of that. And get on their list - they’ll send you a freebie app.
I would look at an Alabama, UAH, Florida State, USF, FAU (Honors) - whatever school that can get you to $25K - vs. applying to schools where you can’t…if that makes sense. And when you are seeking a price point - use all your 20 Common App spots. Others like Miss State, Ole Miss - don’t know if their programs work for you academically but their price points will. I understand not all these “merit” schools will fit your academic needs - hence check out their programs specifically and even lob a call to the department heads (have your child) to see - how they work in this area.
I surmise (short of need being met at a private) with this list your daughter is most likely to end up at an SC public - and that’s fine.
Best of luck.