OP: With respect to LACs and grad school admissions, there are several academic powerhouses that will prepare one for advanced study:
Williams College, Amherst College, Bates College, Swarthmore, Haverford, Wellesley (all female), Carleton College, and many others.
Five LACs which your daughter should consider are: Carleton College in Minnesota, Williams College in Massachusetts, Hamilton College in New York, & Claremont McKenna College in California & Pomona College in California which is close to CMC (Claremont McKenna College).
P.S. I do not consider the University of Richmond to be in the same “academic powerhouse” category as are the 5 schools which I have suggested. Nevertheless, U of Richmond offers a major–Philosophy, Politics, Economics, and the Law–which may be of interest to your daughter.