The De La Rosa principles do not require an offender to establish a direct causal link or nexus between mental health issues and the offending before moral culpability is reduced; what is required is evidence that mental health contributed to the offending in a material way, but even then reduction in sentence does not automatically follow, particularly in domestic violence cases where deterrence remains a weighty consideration.
The full text is available to signed-in members, including the 6 later cases that cite this judgment.
1 of the 6 citing cases carry a classified treatment. How each court treated it is available to signed-in members.