Have her take over complete management of the meds now, while you are still there to keep an eye on her. My S has one chronic med that we are able to fill via our insurance company's mail-order pharmacy and have shipped directly to school every 3 months. He lets me know when he's running out, but I do keep track to make sure he's on top of it.
For his ADD (controlled sub) med, the health center writes the monthly prescription and S has it filled at a local pharmacy as the OOS school pharmacy does not accept our insurance (sigh). The health center had our local physician send documentation of the need for the ADD meds before they would write the scripts. Fortunately, the pharmacy is close by.
S uses a weekly pill dispenser and then keeps the remaining meds in a lock box which stays in his locked footlocker. This was suggested to us by the health center as a way to make it easier for S to take meds daily without keeping large quantities of meds exposed. It's also very easy for him to just throw the dispenser in his backpack if he is going away overnight.