If she's headed to medical school...
Gift cards for food/coffee wherever the college is (either on-campus, or nearby eateries)
A cute ID lanyard/clip that would remind her of your kids (something they do together?) There's some cute ones made from vaccine flip-off lids on Etsy, which medical people usually get a kick out of. Search "ID Badge Medication" and you'll see what I mean. They are all the rage at my old office. You can pair this with something else.
A sweatshirt from her upcoming school (or anything else from her new school).
A gift card for a "grown-up" clothing store, if needed/appropriate. (We had several residents come into our clinic in clothes a bit too revealing for clinic.)
--Mimi
Mom to Lala (2004), Bonus Mom to Big Sis 1 (1991) and Big Sis 2 (1992)
Grammy to Big Kindy Kid (2011), Big Pre-K Kid (2012),
Grandbaby Appendage (2014), and New Baby Grandboy (summer 2017)