"From the back we had a very strong base which was great for us going forward.
"It was an all-round excellent display and hopefully we keep going in this competition because it's always a bonus to get a good cup run."
Rotorua United took the lead in the 12th minute when Emmanuelle-Maguire latched on to a through ball from Dani McKenzie and calmly chipped the ball over the oncoming keeper with her right foot.
Fisher sealed the victory with a first-time right-footed volley into the top corner in the penalty box with 20 minutes remaining.
"Both goals were outstanding with great finishes and Robyn's just flew off her boot. The keeper had no chance," said Gibbs.
"It's that sort of finishing you need in a close game. And we really played some top-drawer football on the day."
The official draw for the third round will be conducted this week at the New Zealand Football headquarters in Auckland.
Defending champions are Glenfield Rovers who have won the competition three times since its introduction.
Gibbs and manager Ron Cane have prioritised the league this season. However, Gibbs believes a good cup run will help the confidence of the team.
"Our main goal is the league and for us that is going very well this season," he said. "But the cup is great because it pushes the players to raise their game and it is always a special occasion to play in those sorts of matches.
"We will just have to take each game as it comes and hope we get a good draw in the next round."
Rotorua United are third in the WaiBOP Premier League on 12 points after six games - four points behind leaders Melville United with a game in hand.
- For all the results from round two of New Zealand Football's Women's Knockout Cup visit www.nzfootball.co.nz