The two teams couldn’t be separated in the first half and entered the bread tied at 22. The Fever then won the third period 13-12 before pulling away in the final quarter 14-7 for an overall 49-41 win.
Sasha Glasgow was player of the match, shooting 21/24 while Fowler shot 12/13.
Courtney Bruce and Kim Jenner were both stand outs in defence. Bruce had four gains while Jenner had two to her name.
Jamaicans Shamera Sterling and Latanya Wilson had two gains, each, for the Thunderbirds.
Elsewhere, Romelda Aiken-George shot 15/16 to help NSW Swifts defeat Giants Netball 44-38 to finish fifth.
The Team Girls Cup acts as a pre-season tournament ahead of the Suncorp Super Netball League in which the Fever are the defending Champions. In last year's final, Fowler scored 58 goals as the Fever beat the Melbourne Vixens 70-59. She was also named player of the year for the fifth year in a row.
Wallace’s 43 goals came from 45 attempts as the Swifts outscored the Magpies 19-15 in the second quarter to take a four-goal lead into half-time. The first quarter ended 14-14.
Led by Nelson, who had 43 attempts at goal and Gabrielle Sinclair, who was perfect from the field for her six goals, the Magpies closed the gap when they outscored the Swifts 15-12 in the third quarter to keep things close.
However, the third-place Swifts rallied to score 17 goals to the Magpies’ nine to close out the match and seal their third victory of the season.
In the other match played today, Shamera Sterling pulled in two rebounds but had 17 penalties as the Adelaide Thunderbirds lost 58-59 to the Sunshine Coast Lightning. It was their fifth loss on the trot and remain anchored to the bottom of the table.
Lenise Potgieter led the scoring for the Thunderbirds with 34 goals and Georgie Horjus had 20 but Cara Koenen’s 26 goals and Steph Wood’s 16 enough to emerge one-point victors.
On Saturday, the Melbourne Vixens ran out 66-64 winners over Queensland Firebirds, their first win of the season.
The Vixens were near-perfect shooting as Mwai Kumwenda scored 27 goals from just 28 attempts and Rahni Samason scored 19 from 19.
Meanwhile, Romelda Aiken scored 39 goals and Gretel Bueta 16, as the Firebirds lost their fourth match in five games.
Held every March 31 since 2009, the day has been set up as a celebration of pride and awareness, while aiming to recognise trans and gender-diverse achievements. Wallace-Joseph, a two-time NSW Swifts champion, shared a clickbait headline from a Canadian outlet that insinuated United States President Joe Biden had "declared" Easter Sunday would be the recurring day for International Transgender Day of Visibility moving forward.
"The disrespect is crazy. Don't play with God," Wallace captioned an Instagram story.
The day's crossover with Easter this year was used by some to criticise the United States president and suggest he was co-opting a religious holiday to promote trans rights. Fans criticised Wallace-Joseph's post and pointed out the misleading nature of the headline, but the Trinidad and Tobago shooter doubled down.
"I'm not hating on people, if you know me you will understand … I have heaps of gay friends and am not judging anyone on their gender," she wrote in a X, formerly Twitter, post.
Wallace-Joseph also confirmed she still planned to play in the NSW Swifts Pride Match in May. The Instagram story and relevant tweets have since been deleted after intervention from the Super Netball club, which distanced itself from her comments.
"The NSW Swifts are aware of a social media post that has caused understandable hurt to members of the transgender community," a statement read.
"The views expressed in the post are not shared by the club. The club spoke with Samantha raising its concerns. It is important to note that Samantha listened and will meet us tomorrow," it added.
The Super Netball league also issued a similar release, reinstating its commitment to "embrace diversity and ensure the sport is welcoming and safe for everyone who wants to participate", while it works closely with the Swifts regarding the sport's code of conduct.