She knew she was not her parents' biological child when she was 17 years old
That soured relationship changed when she was 17 years old
Because she indirectly caused her parents to die in a car accident when she was 18 years old
The memory that I don't want to remember in my life was when I was 18 years old
From now on, my life has stayed at the age of 18 and I can't go back.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.