What a dear book! I love Rebecca and her go-getter, positive attitude. She has wisdom beyond her years, and everyone can’t help but benefit from knowing her. This abridged version was long enough for me, the first 2/3 of the book was medium-paced and then I found the last bit when she’s at Wareham a bit boring and too fast-paced, she ages another 3 years in half the time. 
The relationship between Rebecca and Adam is a bit strange given his being 17 yrs older, and the closeness of Rebecca and her teacher is suspect also - as if a student would go on holiday with a teacher these days!! It exemplifies how special Rebecca is, and probably innocent for the time.