Other Leon's Wife

[MGr]

This is not what a business relationship looks like

Yes it does, but a better translation of that file, which again does not imply anything about cutting ties and goes on to include her suggesting a loss of future opportunity to make use of their partnership:

Ada and the Raccoon Incident

ADA AND THE RACCOON INCIDENT In 1998, Ada Wong infiltrated Raccoon City at the request of Albert Wesker, the father of Jake Muller. She was tasked with recovering the "G-Virus" that Sherry Birkin's...

www.projectumbrella.net

Additional intention of working with him further:

Ada's Report

Ada's Report is a series of five records recorded by Ada Wong regarding the details and conditions of her mission in Southern Europe. First released as a supplement to the Separate Ways (the another...

www.projectumbrella.net

He also nearly got her killed by Javier in 2002 and this did nothing to stop their rivalry from continuing.

From Patrick in 2006 which again mentions her still working with him:

Patrick's Memoirs 3

PATRICK'S MEMOIRS 3 I have been in Master Oswell's service for many years, but this time I am no longer sure of his real intentions. Up until now, Master Oswell has cut off all contact with the...

www.projectumbrella.net

I've known no sources to contradict these, that's why I asked.

 

[‘99 Problems]

Oh yeah, you’re right. My bad. I read over her report again, I forgot that she technically gave him a different sample, so they wouldn’t have any reason to have a falling out.

 

[MGr]

That's the thing, I see it as betrayal wouldn't be a falling out to them so much as it would be just another Tuesday on the job. That's the life underground. No honour among thieves. They're both used to using people and being used in turn. It's not personal.

It's why Ada suddenly having remorse and wanting to settle down as Leon's little homemaker would be such a massive disservice to her character. It's just not her style. And he'd be nearly as big a criminal as Alyssa for not turning Spencer in to the FBI and FSB by not turning Ada over to the CIA. The rival company board were no better than Wesker.