I agree that the undergraduate student body, and the surrounding community, is less diverse at UW than at U MN Twin Cities. At the same time, the legislature has increased funding for UW and the UW system, and UW has managed through the funding issue. The speech discusses in the first article linked in post #10 was from September 2016, when the Chancellor was asking the legislature to increase funding, and noted various needs. Funding has increased. While merely anecdotal, we know a highly regarded faculty member who left UW as the funding issue started, and has already returned. Bottom line, the sky is not, has not, and almost certainly will not, fall at UW. A MN student who wants to leave their familiar territory and take advantage of tuition reciprocity with UW will have amazing opportunities at UW.
While UW itself is not, percentage wise, as diverse as MN, it is so large that a student will have plenty of opportunities through student groups etc. to connect with students from different ethnicities. There is a freshman residential learning community for women in science, which might be attractive to the OP.
At the end of the day, there is no bad choice here. Good luck to the OP.