Bryn Mawr alum here. Both great schools - I had the same decision to make 30+ years ago. Go where you feel most comfortable. I will say, if you go to BMC, you won’t be going into Philly often. It’s time consuming and there is plenty to do in the bi-college community. The best thing about the proximity of Philadelphia is with regard to post-graduation employment. Many alumni work in the area for their first ‘real job’ after getting their degree.