help for a story behind ayu songs

[tantalicious]

i`m planning to using ayu`s song for my thesis
so i need help from you guys

i want to know if there`s any story behind ayu`s song

like untitled for her which is dedicated to her friends who committed suicide
virgin road and a song for xx which is dedicated to her mother and soon

so..
can you guys help me with that?
and is she mentioned it on magazine or interview?
thanks before and sorry for the messy english