The Michael Dods-trained three-year-old won at Newcastle, Windsor and Haydock between late May and the end of June, but had not been seen in competitive action since.
Stepped up to Listed class in Scotland, she was a 5-1 shot in the hands of Paul Mulrennan and after being given time to find her feet, she began to make inroads on the leaders from the halfway stage.
For a moment it looked as though she might be caught in a pocket, but Mulrennan switched her to the outside and after easing out The Wagon Wheel, Mabs Cross charged home to get up and beat 9-4 favourite Clem Fandango by half a length.
Dods said: "We've always thought a lot of this filly. I think I said after her first or second win I felt she was Listed class.
"We gave her a bit of a time off as there weren't really any races we wanted to run her in during that time and the plan was to bring her back in the Listed race at the Ayr Gold Cup meeting.
"When that was abandoned we said we'd go to Ascot last Saturday, but then they saved the Ayr race and moved it to Musselburgh, so it seemed the obvious thing to do to wait for this."
Asked about future plans, the Darlington-based trainer added: "She's done her job today, so she'll have the winter off now and we'll look forward to next season with her.
"When Paul rode her at home the other day, he said this filly was giving him the same sort of feel Easton Angel gave him last year. I hope he's right."
Mulrennan was completing a double on the card, having earlier steered the Keith Dalgleish-trained Han Solo Berger to a facile success in the All-New racinguk.com Novice Auction Stakes.
Stepping up to seven furlongs for the first time, the 2-1 favourite was soon bowling along in front and readily pulled three and a quarter lengths clear of Southpark.
Sophie P claimed her second course victory in the space of eight days with a determined display in the Isn't It Wiser To Bet At racinguk.com Handicap.
Mike Smith's filly made a successful start to the campaign at Ayr back in the spring before finding only subsequent Group One winner Nezwaah too strong in a Listed event at the same venue.
Results have been mixed since, but having rediscovered the winning thread here at the start of the month, she was a 5-1 chance to follow up under the penalty and knuckled down well for 7lb claimer Connor Murtagh to score by half a length from Rousayan.
Smith said: "That was superb. Everything worked out perfectly. She's been very consistent and there's actually another race for her back here next week.
"As long as she comes out of today well and eats up, we'll enter her up for that and see how we go."
Knockamany Bends was a 25-1 winner of the Wise Betting At racinguk.com Handicap for trainer John Wainwright and jockey James Sullivan.
The formidable combination of Richard Fahey and Paul Hanagan struck gold in the Bet At racinguk.com Handicap with Royal Cosmic (8-1).