Not only do the DIKs already know who she is, she's paying cash for an elite college in America. That's not something you can do if you've only been working for a year. An elite private school on the low end in the US is $70,000 dollars a year. If we are going to assume B&R isn't an elite school but just an average Four Year Private school the average cost is $35,852 dollars a year, which doesn't include books, housing, food plans, ectra. If she's paying cash like she claims, it's likely she's saved up a couple of years, and has kept working to have regular spending money now and saving up for next years tuition.
I'm sure B&R is not an "elite" one and probably not an "average" one too. More likely a decent economy one.
I don't think that such guy like MC, would be able to apply to "average" or "elite" college. This would be an unaffordable amount for him, even with a loan.
Looking at the other students, you may conclude the same thoughts. The only "elite" frat in a whole campus is ANOs and they strongly contrast and differ from the rest of the students. In "average" or "elite" college almost all students would be like preps in B&R.
MC mentioned that his $5000 inheritance may cover 1 semester (2.5 months?) of Maya's tuition (when being in Throuple and thinks about spending them or saving for future use).
So, it should be about $20k per year. And $60-80k for a full tuition of 3-4 years (Maya mentioned that tuition may take 3 years instead of 4 years if student does well and take additional classes). But such student would need to act like Magnar and other nerds probably, because even Sage, who is quite intelligent and clever is at her 4th year.
That and she can buy alcohol hints to her being at least 21. She's likely in her early 20s. She's not 18, she was at least 18 last year to be with Jamie and Leon. 19-20 is possible but less likely. 21 is how old I think she is. 22-24 is possible but unlikely.
I suppose she is at least 22yo, since she probably have to be 21yo to work in strip club and she works there already for a while, 1-2 years at least. It sound stupid if customers have such age restriction to enter the strip club, but employees, for example, may work in such place from 18.
Pink Rose "boss" goes for risk with an agreement between security & DIKs, allowing guys which are below 21 to enter the club. While allowing girl(s) below 21 to work there is a very different thing. And in theory, the criminal punishment and consequences would be very different if such facts were discovered.
Some people may use a porn-industry as an example, where "actors" have to be 18+, but not 21+, but it's not the same, I suppose. Maybe such limitation (to Pink Rose particularly) applied because they sell an alcohol. But I can barely imagine strip club w/o it. So, technically, strip club with no alcohol probably may work with employees and customers from 18+.
I'm sure USA residents may clear this out to players from another countries.
In my country all and every restrictions are lifted after 18+