I am not a lawyer, however, but having a background in criminology and having worked with lawyers here are my legal two cents:
The police would have gotten involved had Quinn demanded, encouraged, or incited Holowka to commit suicide. She did not (however, if there were any people encouraging Holowka to commit suicide just prior to his doing so, please let me know and I can forward this to the WPS contact I now have). What the legal insinuation would be was that Quinn's accusation was the catalyst for Holowka's suicide.
in effect, that had Quinn not released her statement, Holowka would not have committed suicide.
This would make it a civil matter, meaning that the executor of Holowka's representation (likely his family, though could have been his spouse, girlfriend, etc...) may be able to sue Zoe Quinn for her liability in causing the suicide.
Just before all of this happened, in August,
a mother in the UK sued the boyfriend of her deceased daughter for having allegedly caused her suicide due to his emotional and sometimes physical abuse. She alleges that had he not been so callous towards her, she would still be alive.
Earlier this year,
Jerry Springer was sued by the family of a man who committed suicide after appearing on his show, citing the mental distress of the taping and airing of the episode.
Considering the timing of the events (Holowka lost his relationship with NITW, the game he had worked so hard on and revolved his life around, immediately after the Quinn's statement, committing suicide almost immediately after), I believe it meets many of the standards lawyers would look at to take the case on."