Cornell eliminated the option to add a second college to the app.
This line “Second choice would be Econ, political science, policy, pre-law type direction.” makes me think that ILR could be a good fit, as the coursework aligns well. Has she attended an ILR info session? My info may be out of date, but they used to host these roundtable info sessions where the AdCom would ask each student why he was interested in ILR.
Students in any college at Cornell are also allowed to pursue a business minor. (The Hotel school used to be the exception, but now that Hotel is under the Johnson School of Business, they no longer need to list it as an exception.)
https://dyson.cornell.edu/programs/undergraduate/minors/university-wide-business/
It is also possible to apply to transfer to Dyson, but no guarantees. Generally, Cornell makes it fairly easy to transfer between colleges, but the demand for Dyson is high, so the admission is not guaranteed. Someone may have Dyson admission stats. I recall reading that the first year class doubled by second year with transfers, approximately half external and half internal, but I read that years ago so it may be out of date.
https://dyson.cornell.edu/programs/undergraduate/admissions/internal-transfer/
I agree that applying to UVA the first year they are offering ED may be advantageous. Would she be happy with the other academic offerings at Virginia if she were not admitted to the Comm School?