I think you really need to decide what is most important to you and your D21. You mention the Econ programs and potential career paths, “fit,” and then the $80k difference. There is no need to start thinking about fit and Econ programs if you are not going to be able to get past the price difference. Are you going to feel fine if you visit Hamilton and your D falls in love and turns down the scholarship at Richmond? Is it something you will not second guess when paying the Hamilton tuition? If not, perhaps you should be upfront about that before even visiting.
I will add that my D20 is a first year at Hamilton and absolutely loves it. She applied ED1, was accepted, and hasn’t second guessed her choice yet. She plans to major in Econ with a double major in Creative Writing/Gov/Soc/Environmental Studies. The double changes regularly—she is the poster child for LAC and open curriculum! She considers herself a writer though, and that was a big draw. She is already in knots over upcoming registration for the fall because “there are so many courses that look fabulous!” 
That said, as another poster mentioned, Hamilton’s student population is just under 2k. Your D needs to want the small LAC vibe. While still a small LAC, Richmond has double the students. That is no small difference. And, as everyone mentioned, the schools are VERY different. Given the size, you need to understand what you are getting at Hamilton and fully embrace it.
Have fun on your visit. My D tells me there are a lot of families doing self-guided tours these days.