It was alleged this week that Abby, 37, filed for a quickie divorce from Ben, 36, after 11 years of marriage.
Devastated Abby's shock decision comes after claims Ben and Abby are in a relationship, despite them both denying it in the past.
Now Abby is said to be planning a way to get Kristina, 37, permanently axed from Strictly – the show she believes ruined her marriage, after Ben partnered with the Russian in 2013.
A source told The Sun: "[Abby] is still furious with Kristina. She considered her a friend while Ben was on Strictly, so seeing them together now is absolutely heartbreaking.
"Kristina and Ben still insist nothing happened between them while on the show and say they only started seeing each other in recent weeks.
"Abby is sceptical about that. She has told people close to her that she is going to do everything she can to get Kristina kicked off Strictly."
Ben and Abby – who share twin daughters Harriette and Isabelle – split last year, amid rumours he and Kristina were romantically involved.
Last year it was reported that producers of the BBC One show had banned Kristina from dancing with married men.
A source at the time said: "There were discussions about Kristina, and she was made aware of them herself. There is no blame being attached to anyone.
"But there is no doubting the fact that Kristina is a very attractive woman who has been at the centre of relationship breakdowns."