Cissy,
I agree wholeheartedly with above advice.
My daughter studied abroad a few years ago (2016), and I can truly say that it was a wonderful experience that changed her life. She became a more confident and independent young woman. She traveled with her new friends, booking inexpensive flights and staying in hostels. [Some universities/study abroad programs will also offer great weekend trips]
She and her friends walked everywhere, in “her city”, despite having reliable, inexpensive public transportation.
Her city (Edinburgh) became her new home and she was an amazing tour guide when I visited her.
At the end of her trip, one of her knees started bothering her, and her friends carried her up and down the stairs to a favorite park they used to frequent.
And... She’s stayed in touch with her friends to this day.
Here are a few tips:
Avoid packing a monster suitcase and avoid overpacking. Keep in mind that she will most likely buy some clothes/shoes there. My daughter took a 24 inch suitcase, a book backpack which she used for short weekend trips, and a small crossbody purse.
If you plan to visit her, do so at the end of her study abroad experience, but don’t be surprised if she wants to continue traveling with her friends, or she’s ready to go home.
Pack a lock to lock her valuables while staying in hostels.
Make sure she reads tips on keeping valuables (passport, credit/ debit cards. cell phone) safe while traveling.
We all learn from our mistakes...
She and a friend flew to London, to visit another friend, and they missed the return flight because they were waiting at the wrong gate (there were two flights to Edinburgh, departing at the same time, by two different carriers)
She called home and was very frustrated about the whole situation.
They had to buy new, last minute (expensive) tickets, but they didn’t miss any other flights afterwards!
Wishing your daughter a wonderful study abroad experience!
Edited to add...
Forgot to answer your question!
As others have mentioned, booking train tickets in advance will save money.
No need for a rail pass in Spain.
Trains and buses are very reliable.
My mom and I spent 3 weeks in Spain and traveled solely by public transportation.
There is a multi-day bus pass for city buses in Sevilla.
Here’s a useful website with more detailed information: Andalucia.com
Make sure she books tickets to the Alhambra (Granada), way in advance (used to be 3 months in advance pre-pandemic)