Kirby struck the opener in the 42nd minute and Mjelde added a 78th-minute penalty, awarded for a Leila Ouahabi handball, as Emma Hayes’ side bounced back from the shock 2-1 loss at Liverpool in their campaign opener last Sunday.
Gareth Taylor’s City created a number of chances, particularly in the first half, which included a Laura Coombs shot that Ann-Katrin Berger did superbly to divert against a post, but they were unable to save themselves from another loss following last weekend’s 4-3 reverse at Villa.
Manchester United made it back-to-back victories for their start to the season as they beat West Ham 2-0 at the Chigwell Construction Stadium.
Marc Skinner’s visitors scored twice in quick succession early in the second half, with summer signing Lucia Garcia putting them ahead in the 50th minute as she went around goalkeeper Mackenzie Arnold and slotted in.
Hannah Blundell then doubled the lead with a finish from the edge of the box five minutes later.
— Manchester United Women (@ManUtdWomen) September 25, 2022
The Red Devils join leaders Arsenal on six points, as do Villa after they also won 2-0 on the road, at Leicester.
Rachel Daly added to her debut brace last week by opening the scoring with a third-minute penalty following Erin Simon’s foul on Kirsty Hanson.
The victory was subsequently wrapped up for Carla Ward’s side with four minutes to go when substitute Emily Gielnik struck having been teed up by Kenza Dali.
Brighton registered their first points of the campaign in the day’s earliest kick-off, beating Reading 2-1 at the Amex Stadium.
Lee Geum-min and Katie Robinson put the Seagulls two goals up before Charlie Wellings’ stoppage-time reply.