Burns was aided by Madison Attanasio's 10 points and Jessica Garber's 13 points. North closed the win with a 12-point advantage in the second half.
Taylor Dillon led South with 20 points and Allison Taub added 17.
In other Suburban One action:
Keifonna Ferguson scored 16 points and Norristown allowed just nine first-half points en route to topping visiting Cheltenham, 45-42.
Junior guard Gabby Nolan had eight steals, six assists and 12 points to lead Abington over host Bensalem, 68-44.
Allison Gallagher scored 14 points and Bianca Picard added 13 points to lead Souderton over host Quakertown, 61-32.
Inter-Ac. Margaux Paolino dished out five assists and Meghan Pickell hit three three-pointers as Episcopal Academy downed host Springside Chestnut Hill, 56-32. Elodie Furey added seven rebounds.
Ayanna Matthews scored 10 of her team-high 14 points in the third quarter and Penn Charter edged host Germantown Academy, 51-47. Mireyah Davis added eight points and 10 rebounds. Lauren Oeth led GA with 12 points and 10 rebounds.
Catholic. Taylor Adair's 10 points and five assists powered visiting Archbishop Ryan past Little Flower, 63-41. Shannon Glenn scored seven of her 12 points in the third quarter.
Jackie Carney's nine points and Lexi Stover's eight points led Archbishop Carroll over visiting Hallahan, 62-21.
Friends Schools. Alexa Middleton scored 13 points and grabbed 13 rebounds to lead Shipley over host Abington Friends, 56-41. Bianca Adams added four points and six assists.
Caroline Myran's eight points in the first half moved host Germantown Friends past Moorestown Friends, 43-25.
Catholic Academies. Tina DiGiacomo scored 18 points and grabbed 10 rebounds as Merion Mercy turned away visiting Villa Joseph Marie, 54-43. The hosts hit all eight of their foul shots.
Bicentennial. Jamie Barr, a senior, scored seven points and blocked 12 shots to lift Delco Christian over visiting Christopher Dock, 40-32.
Ches-Mont. Paige Warfel scored 12 of her 18 points in the second half to pull Downingtown East past host West Chester East, 42-32.
Central. Madison D'Ambrosio poured in a team-high 18 points to lead Springfield (Delco) over visiting Upper Darby, 49-41.
Ellie Mack scored 26 points and Conestoga held off host Marple Newtown, 48-40.