Speaking to the Otago Daily Times, she said reaction to her breach of confidence over a confidential Forsyth Barr Stadium letter had taken its toll.
She felt isolated from her peers around the council table, particularly when it came to winning appointments to senior positions after 17 years as a councillor.
Cr Stevenson lost her only senior position - deputy chairwoman of the community development committee - at the start of this term and failed to win a place on the council's hearings committee panel, despite repeated requests and the completion of a planning qualification for the role.
She has also endured a difficult week. The fifth draft of her apology to Mayor Peter Chin and other councillors was finally accepted on Wednesday.
Deputy Mayor Syd Brown said then her behaviour risked eroding the faith businesses and others had in the council's ability to respect confidentiality, and believed there was a "general consensus" among councillors to toughen the council's standing orders.
Yesterday, the ODT revealed Cr Stevenson was the city's tardiest councillor, with 25 late arrivals for meetings this term.
Asked this week if she would seek re-election next year, Cr Stevenson said she was "unsure".
"I believe I have a role representing the community. I'm being excluded from all senior roles on council and on most parties. Whether I can continue to represent the community while being excluded, I'm unsure.
"I will stand as long as I can keep representing the community while being excluded from major roles and placement on working parties."
Cr Stevenson said she had completed a resource consent training course for councillors, paid for by the council, and also hoped to complete a masters in urban planning degree from the University of Otago when her thesis mark was awarded later this year. Despite that, she said she had been "refused" a place on the council's hearings committee, which "adds to the sense of marginalisation".
"I have been applying constantly."
Asked if she thought the lack of support from other councillors was a vote of no confidence in her, Cr Stevenson said: "Yes, I do."
