- Hallie is a regular on the writing staff where she is credited in season 2 as the writing assistant. She is credited as season 3 staff writer.
- She received recognition for the television screenplay in season 2 episode 9, "The Weeping Somnambulist", in addition to writing assistant on that episode.
- She received recognition for the television screenplay in season 3 episode 9, "Intransigence", in addition to staff writer on that episode.
- Hallie is known to operate the @TheExpanseWR twitter account.