@happy1 Yes. I know I am very lucky in that I have been accepted into two great schools. But I believe there is still a decision to be made. I posted this thread and mentioned my parents at the risk of sounding like a snotty rebellious teenager, but I think my family’s role in this decision remains relevant to where I would be happiest.
@Waiting2exhale Thank you for putting that into words.
Thank you very much for the replies and I appreciate the comment about the social scene at Bryn Mawr @nineteeth123 .
No, that’s not true (well, not "mostly). Graduate students do teach some classes at Columbia - mostly summer courses, some of the Common Core, and sometimes an introductory course if they are an advanced graduate student (so 4th-5th year PhD student). Generally what happens is that a professor lectures and the TAs lead discussion sections or labs. I will say that many of the professors who teach undergraduate intro and intermediate classes are adjuncts, though. In other words, they are not the fancy research professors Columbia advertises; they are people with PhDs Columbia hires to teach intro classes by the class.
Also, you don’t have to go to graduate school with a BS in physics and/or CS. I would bet that most people with a major in those fields actually don’t.
So, just an update for anyone who is still interested or anyone who has a similar problem.
I visited both campuses over spring break and I had a really amazing time. Just like you guys, everyone was really helpful and I am very grateful for that.
Both schools have really good programs. Barnard’s physics program is very small and specializes in Astrophysics and they have a lot of connections with NASA. I’m pretty sure I’d like to specialize in Astrophysics, but I don’t know. Additionally, after your second year, almost all upper level classes are taken at Columbia. (Which doesn’t really appeal to me). Bryn Mawr has a similar small physics set up, but most Astrophysics classes have to be taken at Haverford or Swarthmore, both of which I don’t know very much about, but apparently have pretty good programs as well. Also they said you can take up to two classes a year at UPenn, even though it’s about 45 minutes from campus.
The thing is I didn’t really like New York City. But I really liked Bryn Mawr. What really appealed to me about Bryn Mawr was the attitude of the students. Everyone seemed genuinely excited about their majors and about being at Bryn Mawr. The whole culture at this school is based around being kind and respectful and I really liked that. At Barnard on the other hand, I met more than a few people who were just miserable. While Barnard does have an objectively superior program, I don’t see the point in going there if I’m going to be miserable in the classes and environment.
Unfortunately, it looks like my parents are really set on sending me to Barnard??? And I’ve voiced to them that I would prefer Bryn Mawr, but they tend to overlook it. It’s okay though. I believe I will be in a good place at either school. But I’ll let y’all know when I commit if anyone is still interested. Thanks again!! 
I think you are more likely to be miserable with your parents than Barnard. I don’t know why the would have let you apply to Bryn Mawr if they were going to pull the rug out financially after the fact of acceptance. It sounds like you are being very responsible and doing due diligence. It is not like you are refusing Barnard to go off to community college with a boyfriend. Bryn Mawr is a great school. If that is your choice you need to stand up to your parents - or prepare yourself for the rest of your life with the same dynamic.