By any measure, Bryn Mawr is rich. It has a greater endowment per student than some universities you may have heard of named Columbia, Cornell, and Georgetown (among many others).
Just because Smith and Wellesley have a greater endowment per student ratio doesn’t mean they are immeasurably better. Princeton has a much bigger endowment per student than Harvard. Does than make Princeton much better than Harvard?
And how do you know you would have done better if you hadn’t concentrated on Chinese as much as you did? As I mentioned, given your test scores, I would not have expected you to get in to Bryn Mawr or any other elite private. It’s possible that being so good at Chinese as a non-native speaker was what got you in and if you had spent your energies elsewhere, you would have been shut out everywhere.