Do not let her take the bus tour!!
I give a lot of walking tours for kids of friends and they tell me they never would have seen things like Vorhees Mall without walking it.
If you know the campus well enough. park at Old Queens walk through thoe buildings and then down to the Mall. you can walk inot some buildings if needed. Show off the new Honors College and the Yard etc. Walk up College ave then up to Bishop House to show the Dorms. Walk over to the Student Center and The Barn then Library.
Depending her area of interest, ride over to Busch and walk through the Student Center / Dining hall and then to the Engineering Mall .
Head over to Livi show off the Livi Apts. , stores, movie theater and then walk over to Student Center and Dining Hall. I usually eat at the dining hall, they take cash.
Wals a little through Livi and then head over to Douglas / Cook . Like someone posted about Rutgers Day is a lot of fun on Cook and CA.
Have fun.