Was browsing a post last night about favourite childhood books and was pondering what mine were. One book popped into my mind but I cannot recall what it was called. Only details I remember was it was set in America and the protagonist was a young teenager. She was being brought up by her widowed father (either that or the mum had left). It was a series of books about various trials and tribulations but the only one that I remember is one where the main character is being bullied by another girl. At the end of the book, the bully kills herself on a train track and it was announced in the school assembly. I was obviously quite shocked by this, hence why it's one of the only details of the entire series that I remember. I read these books circa 2000/2001 in my school library so they would have been published before that. I know this is like finding a needle in a haystack but it's been bugging me so much. Have posted on a couple of "find that book" type sites but to no avail!