"If she shows a vulnerability that even the most staunch and dedicated people who are applicants of good health can fall by the wayside, she has admitted it was totally irresponsible, I think she can survive it.
"Her brand has obviously been damaged and it will take a while but there will be a lot of empathy from the people that like her and a lot of vindication for people who don’t."
The Biggest Loser star, 49, was driving with her four-year-old son, Axel, in the car at the time she was arrested and taken to Waverley Police Station in the Sydney's East, where she returned a breath test reading of 0.086.
A deeply contrite Michelle has been frank about her feelings since her drama came to public notice.
"I would like to express my deep regret for breaking the law, this was a terrible mistake and an error of judgment," she said in a statement.
"This behaviour is inexcusable, and I am absolutely devastated and embarrassed to find myself in this position. It has been a very difficult time for me the last few weeks dealing with the break-up of my long-term relationship.
"This is by no means an excuse for my behaviour but I feel the emotional turmoil I have been going through has impacted my decision making. I am extremely sorry for my actions."