Kerr, who was acquitted of racially aggravated harassment on Tuesday following a high-profile court case in London, has since been given a resounding vote of support and confidence from the club.
Chelsea boss Sonia Bompastor said on Thursday that Kerr wouldn't be disciplined by the club as her post-hearing apology had been "enough".
After also returning to training, Kerr, who's still not fit enough to earn a place in the squad as she continues her long-term recuperation from an ACL injury, took her place among the crowd on Sunday to watch Chelsea make hard work of the victory that puts them back seven points clear on course for a sixth-straight title.
It was an afternoon when Kerr's goalscoring nous looked as if it would have been sorely needed for the labouring, wasteful Blues, after they fell behind to a Kelly Gago goal for Everton, who were without injured Matildas midfielder Clare Wheeler.
But Colombian Mayra Ramirez levelled in the 62nd minute before Chelsea finally prevailed three minutes into added time as England star Lauren James struck the winner.
It left still-unbeaten Chelsea on 40 points, with Manchester United, who beat bottom club Crystal Palace 3-1, on 33 and Arsenal on 30 after they had hammered old foes Tottenham 5-0.
It proved a remarkable north London derby for the six Matildas on view, with Arsenal's trio of Kyra Cooney-Cross, Caitlin Foord and Steph Catley all enjoying the bragging rights.
Australia central defender Clare Hunt had a wretched time, scoring an own goal, deflecting another strike past her luckless goalkeeper and getting booked for fouling Gunners striker Alessia Russo.
Hunt's calamitous afternoon began after 15 minutes when Spurs tried to play their way out from the back only to lose possession when a poor ball out to Hayley Raso ended up with the Aussie winger slipping over, and allowing Arsenal to repossess.
Cooney-Cross took advantage with a lovely cross as Russo got ahead of Hunt, with her glancing header coming off the defender's hip and into the net.
Foord enjoyed roaming free and set up goals after the break for Frida Maanum, whose strike also owed much to a big deflection off the hapless Hunt, and Russo. Â
Mariona Caldentey had fired home Arsenal's second when her first shot rebounded back off Hunt and into her path again, while Emily Fox netted a fifth in the 90th minute.
To end the week when she turned 22, Mary Fowler's breathtaking form continued for Manchester City, as the on-song Matilda laid on two goals for star striker Bunny Shaw in the 4-0 win over Liverpool. That's three goals and four assists for Fowler in her last four WSL games.
But it was the goalscoring return of her fellow forward Shaw that proved the game's most important moment.
For the Jamaican marked her first goal by giving a 'black power' salute, raising a single fist aloft while looking down at the pitch, in a powerful, courageous response to the racist abuse which had devastated her after City's loss to Arsenal last month.
