My DDs had their grand adventures while they were still in high school. We lived in Peru for DD#1's junior and senior years and during that time, she visited Maachu Pichu (I'm sure I spelled that wrong); Quito, Ecuador; and La Paz, Bolivia, as well as several small villages outside of Lima. After Peru, DD#1 went back to the states to live with my sister and go to college. DD#2 was in 5th and 6th grades in Peru and her classes stayed in country. She got her chance to travel when we went to our next assignment, Istanbul, Turkey. From Istanbul, she traveled to Ankara and Izmir and went on a school skiing trip that took them briefly over the Turkish/Soviet Union Border. We lived on the European side of Istanbul, but if we missed our turn into our housing area, we ended up in Asia - there was nowhere to turn around. That's quite a trip - Europe to Asia in 25 minutes!
We next went to London, England, where my baby really blossomed! She was age 14 when we got there, and age 21 when we left two years later! We arrived in country a month before school started, so every night she would pore over her travel guides, decide what "touristy" thing she would do the next day (museums, art galleries, West End Shows, etc.) con her father out if 20BPS, and off she would go! People thought we were nuts letting her run around town by herself, but I figured if she could navigate and stay safe in Istanbul at ages 12-14, she could certainly handle London at 14. She figured out the Tube, learned how to convert money instantaneously in her head, and hey, she knew the language! London made a huge impression on her life, and she tries to return there at least twice a year since she graduated (a stateside) high school in 1991.
DD#2 also visited us in Jakarta, Indonesia; Manila, the Philippines; and both DDs and DGD visited us in Frankfurt, Germany. They all passed on a trip to Abidjan, Cote d'Ivoire - I can't imagine why!
If you and she can together manage it financially, and it's what she wants to do, I'd highly recommend a gap year to travel. DD#1 found her passion (photography) and DD#2 polished hers (writing) outside of the college environment. DD#2 did go to college with a rich background of experiences to write about. DD#1 didn't go back to college, but she has a magnificent portfolio of photos. I think they got the best of both worlds!
Queen Colleen