However, that ''inconsistent'' season is not yet over.
In fact, just how much longer it lasts will be known on Sunday evening, after it plays the best side in the competition, the Queensland Firebirds, in its final regular-season game in Brisbane.
The Steel can all but guarantee a top-three finish and playoff spot with a win, but could yet qualify on goal percentage with a loss as long as the Central Pulse loses to the Adelaide Thunderbirds in Adelaide on Sunday.
That match will finish shortly before the Steel play the Firebirds, and Frew is not yet sure whether the team will know the result of the match before it takes the court.
''We haven't actually talked about what we're going to do, but it's going to be pretty important for us in terms of going into our game,'' she said.
''But I think the management will make the call on if they let us watch it,'' she said.
The Steel briefly lost control of its own destiny when it lost to the Northern Mystics in Invercargill at the weekend, but the Magic did the southerners a huge favour by beating the Pulse in Hamilton on Monday night.
''A few of us girls got together and watched it,'' Frew said.
''It's always nerve-racking when you're watching other teams who can make or break you in terms of where you're sitting on the table.
''It's disappointing we got ourselves into that situation to be relying on other teams to win and lose, but that's how netball goes.''
Frew, who is approaching the end of her first season as the team's captain, said the side was focused on one thing only this weekend - winning and fulfilling a goal set at the start of the season to make the playoffs.
She knows it will not be easy against the Australian conference leader on the road, but takes heart from the fact the Steel has pushed the best teams in the competition all season.
''It's an exciting challenge,'' she said.
''We know we're going to have to improve from Saturday's performance against the Mystics if we want to compete with the Firebirds.
''We have played some really good netball, but unfortunately not enough consistently good netball for 60 minutes.''
Despite the up-and-down results, she has enjoyed captaining the Steel this year, a team which is ''keeping me young''.
Frew credits the young blood in the team - seven players in the squad are in the Netball South under-23 team - for the enthusiastic team environment.
She hopes the majority of the squad signs on with the Steel for next year to continue building on the progress made this season.
Frew (30), who has played the majority of the season at wing defence, has been a consistent performer this season, and plans to return next year.
''I'd love to play with the Steel again next year. I'm still enjoying my netball. I think there's always patches in games you think you can improve, but for me, I'm really happy with the season.
''If I felt I wasn't playing good enough, I wouldn't put my hand up to come back next year.''
However, for now, the focus is on extending the season by at least one week and booking a playoff match against the Magic in Hamilton next weekend.
Central Pulse defender Katrina Grant has been referred to the ANZ Championship disciplinary officer following an incident between her and umpire Jono Bredin in Palmerston North last weekend.
The incident occurred in the final-minute of the Pulse's 55-55 draw with the Southern Steel.
Grant was visibly upset with Bredin's decision to call her for contact outside the circle, before advancing it inside the circle, in the dying seconds of the match.
She approached him after the game to voice her frustration, but was promptly turned away by an official. Her case will be heard this afternoon.
