Rooney suspected that the information that was being leaked to The Sun must have come from one of her Instagram followers on her private Instagram account (not the one with more than 800K followers), and she eventually came to believe the source of the info was Rebekah Vardy, the wife of English soccer player Jamie Vardy.
And now Rebekah has hit back at Danielle's comments online.
On Thursday Vardy called the new claims "bollocks" and said: "I'm not saying anything more until we've finished looking into this situation properly". She has a public and private Instagram account, and on the latter she approved a small group of family and friends to view personal stories.More news: Thomas Cook Buyers Pledge To Save Jobs 10/11/2019
Vardy, who is pregnant with her fifth child, said she was "so upset" that Rooney had made the accusation and she was "disgusted that I'm even having to deny this".
The Sun has run dozens of stories about Vardy in recent months, many of them exclusive and some of which were bylined by the same reporters who wrote the stories about Rooney, which were allegedly based on false information.
On Wednesday, Coleen, 33, released an incredible social media statement aimed at Rebekah, 37, which revealed she set up an elaborate sting on Instagram to "catch" who was leaking fake stories - in a move that sparked mass scandal.
Coleen Rooney holding Cass Mac Rooney looks on prior to the International Friendly match between England and United States at Wembley Stadium on November 15, 2018 in London, United Kingdom.More news: The Wonders Of The "Dark Mode" Feature You Should Know
In an attempt to find out who was responsible, Rooney explained how she blocked all users from viewing her Instagram stories, except for one person, and spent five months posting a series of false stories to see if they ended up being leaked to The Sun, which they eventually did. Cast your mind back to 2002, when then-Taoiseach Bertie Ahern famously attempted to defuse the spat between Ireland manager Mick McCarthy and his captain Roy Keane and you'll know what we mean. This led to apparently fake articles about Rooney seeking baby gender selection treatment in Mexico, a planned return to television, and a flood at her new-build mansion appearing in the Sun.
She reveals why she thinks Rebekah did it, "It's obviously not the money, I think it's the press".
Opening up about when she discovered which account was the culprit, Coleen added: "It's been tough keeping it to myself and not making any comment at all, especially when the stories have been leaked, however I had to".
She concluded: "Now I know for certain which account/individual it's come from".More news: Adventure sets sail in first trailer for Disney's 'Jungle Cruise'
Before you try your hand at a pun, yes, she's already been dubbed WAGatha Christie.