but I'd say that anything "set and forget" is asking for trouble and any backup scheme that relies on only one media source just adds to the possibility of disaster. No backup program is any better than it's ability to recover data. Suppose you install such a backup on a PC or laptop and it creates compressed or encrypted files on external media. What happens if the PC or laptop's hard drive crashes? Guess what. You have no access to the data unless you can restore the operating system and re-install the backup software. As well, there's no substitute for user knowledge and understanding of the backup/recovery process.
I'd suggest that, if you want just a backup program you can install on the primary PC, there are plenty to chose from that will incrementally or differentially copy selected folders to another partition or external drive. I won't try to come up with a list of names but will recommend that such be copied in native format and not in a compressed format that can only be accessed by the backup program. I'll also suggest that your daughter use at least one more source such as a large enough flash drive to which she can manually copy her "my documents" or other folders to that contain her school work. You might also check to see if the college offers an on line storage vault for students to deposit and access their work remotely. I know some schools have this capability. Hope this helps.
My daughter is getting ready to leave for College, we got her an external hard drive to use with her laptop in case she has any issues. What is a good user friendly backup program for her to use that she can pretty much set and forget? I suppose incremental backups would be best because we don't want it to take forever, and want it done nightly. She is running Windows 7 on her laptop and I know that it has a program bat am not sure how good it is. Thanks for any help.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic