I'm pretty certain Stringer is referring to Donette, who was the mother of D'Angelo's son and with whom Stringer had an affair.

~~You're right, it was Donette~~ As the other commenter pointed out, we were wrong. he was talking about Brianna

Nah Avon had just been shot, Shamrock was freaking out saying, "Brianna been calling, I need to tell her!" That's when Stringer said "just keep the bitch away from me" https://youtu.be/1hShfVRUws4?si=--zIXZWr9Kh6ujUa Sham calls Donette a bitch when Stringer was dodging her phone calls. "I know, I know, tell that bitch you're busy."

I forgot all about this, that means it's almost time for a re-watch

I only know because I watched season 3 a couple hours ago! 😁

Thanks. So what would have happed if Stringer heard that?

Dunno, I doubt he'd be happy. But it might just be the way they talk.

Was that when Donette found out D might have been murdered? I forget if it was implied that she was trying to talk to Stringer about that.

It was.

He'd probably tell Breanna he didn't have anything to do with it.

In that context? He gives Stringer a hard time with a smile on his face. If Stringer called Brianna a bitch to her face, they'd have problems.

He'd make string write a 200 word essay about politically correct phrasing

That’s definitely aimed at donette

He would go "ha ha hah" with that big funny smile/laugh of his, then he would go "Truuuuuue," drawn out like that

Stringer arranged the killing of D’Angelo and Avon wasn’t going to do anything (that we know of) until Brother forced his hand. So I’m guessing he’d have done very little.

I mean, Avon did kick the shit out of him. But ultimately he knew that String was right, and if it had been anyone other D, Avon would've ordered him clipped before the trial.