Drugs
Drugs are symbolic of Blakinger's downfall from world-class skater to somebody who was struggling to survive and get by. Drugs are also symbolic of a larger problem in society: the broken prison system.
Prison
Prison (particularly the prison that Blakinger is incarcerated at) is symbolic of the corruption and degradation of society which prioritizes punishment over reformation. Blakinger experienced the prison system firsthand. She found that prison was more concerned with punishment than with helping inmates (including her) get better because of their mental health and addiction concerns.
Journalism
For Blakinger, journalism is symbolic of her salvation. After she was released from prison, Blakinger struggled to find meaning in her life. Journalism allowed her to channel all of her energy into something and keep her focus away from her past and towards her future.
The Ice Rink
The ice rink is symbolic of Blakinger's greatest strengths, her passion, and her ability to thrive despite difficult and challenging circumstances. The skills that made Blakinger so successful in the rink is what made some of her behaviors so destructive.
Corrections in Ink
Blakinger's story of her rise and fall is an allegory that warns against counting on having something before you know you can count on it.