Parallelism hope this helps if not sorry not sorry
Okay so...
Morbid means to be appealed to death,
Retrospection means a look into the past.
We can infer she avoids Morbid Retrospection due to a rough past that could have caused PTSD (Post Traumatic Stress Disorder). Someone could have died in her past that was close to her.
the glistening snow cover the streets after the snowstorm in New England.