Any advice on dealing with homesickness?

I've been a camp counselor a couple of times, and we almost always dealt with our own "homesickies". I had one particular camper who would get so worked up she would throw up occasionally. She was a sweet girl, and had her cousin there, which I think actually made it worse. My co-counselor and I tried our hardest to just keep her busy and keep her mind off it, letting them call home wasn't an option except in the most extreme situation (nothing could distract them- I never saw this happen).

However, the times she would get sick and we'd go to the nurse was a LIFESAVER for me- I got so burnt out and it was nice to have someone else cheer her up. Our camp nurse somehow always knew the right things to say to divert her attention. I'm not sure if there's much else you can do for homesickness, but for all you camp nurses, thanks from a counselor who needed relief!