The best thing is to remind the student they can always call home. I've worked with students who have been heartbroken being away from home. Fortunately, they have been able to go home. When this isn't the case, it's best to remind them to keep in contact. Another reminder for students is to get involved in campus activities and meet other students. Participating in events gives an opportunity to make friends and pass the time.
The beauty to become the person, they desire to be lies in the separation from the familiar. The options become limitless when you're not bound by people who think,they have you figured out.
Encourage your student to utilize their new surroundings to do new things, meet new people and grow as a person.