A very good book about the college life of a new freshman is by Tom Wolfe "I Am Charlotte Simmons". No wonder parents hover.
I read that book for my book club and found it fascinating, like all of Wolf's stuff.
What could a parent have done it that scenario? Talking to her about the realities of college life in the years leading up to her going away would of course be the best thing. But Charlotte's parents were as naive as she.
I think the social isolation in HS contributed as well. She had virtually no social life and such poor self-esteem regarding men, and so was unable to cope with college pressures.
Even if her parents had an inkling of what was going on, what could they have done? Forbidden her to go to the fraternity formal?
The ground work needs to be laid long before they leave home.