The Ferns are coming off a frustrating 2018 under then-head coach Andreas Heraf, who reportedly created a culture of bullying, intimidation, and fear around the team.
However, under new coach Tom Sermanni, who is the former coach of top-ranked women's side the United States, the Ferns have produced several positive results and are going into this year's tournament with a new sense of optimism.
This year, the Ferns have recorded wins over England, Norway, Mexico and Argentina.
Theisen did, however, credit the New Zealand side for their consistency.
"If nothing else, especially for a country with such a small population, you have to give the Football Ferns credit for their consistency."
According to the writer, the Ferns have a chance of reaching the knockout stages at the tournament.
"New Zealand are a threat to frustrate their more talented group stage opponents, the Netherlands and Canada, but if they're going to sneak out of the group, it'll almost assuredly be as a one-win third-place team."
The Football Ferns kickoff their FIFA Women's World Cup campaign at 1am (NZT) tomorrow morning against the Netherlands.