"It is, sadly, a tale of despair and missed opportunities", Mr Huston said.
Mr Tudori described Cousins' relationship with Ms Tinecheff as complex, saying they went to a Bruce Springsteen concert together in January after she asked him to use his contacts to get front-row seats.
Mr Tudori said the Brownlow medallist had "hit rock bottom" with his heavy drug usage, which caused psychosis.
But a Perth judge today asserted he had to make an example of Cousins, sentencing him to 12-months jail and refusing to suspend any part of it. Cousins was also fined $2,400.
"It is disappointing, especially when Ben has made that decision to go to rehabilitation, but you know, Ben's doing okay", Mr Tudori said.
It's the latest incident in Cousins' fall from grace, which has seen him battle drug addiction and mental health issues.
"The football world.is wanting a positive outcome out of this, that he gets help, gets good rehab and cleans himself up and lives a normal, functional life".
Cousins' father refused to speak to reporters, but Mr Tudori said Cousins was disappointed with the sentence, adding he was unsure if the case would be appealed.