I think your assumption/implication that "was traumatic" is inconsistent with "happier now" is questionable.
Re:Our World in Data: Suicide
by killswitched on Friday August 07, 2020 @11:50PM
(#24088791)
S/questionable assumption/incorrect assumption/ = how to speak to non techies
Subtle cultural hint
If the child is better off with their dad killing themselves, that's a failure of society to protect the child who was being abused, or possibly the child has inherited some sociopathic tendencies.
For most people, the suicide of a parent is traumatic, regardless of whether there was abuse.