Passing Clouds.

Arianwen goes to art school where she falls in love with her tutor. For various reasons, it takes them quite a while to get together. They have a wonderful six months then Arianwen is made seriously ill and her ‘family' move her away to get well. They will not tell Jon where she is and he spends a great deal of time searching for her.
Finally, through the action of someone, unknown but very close to Arianwen, they are reunited.