Dutch has had a hunch of a member ratting on the gang to outsiders—but never did he assume there'd be two of you.
It's been quite the journey, one full of hard labour; blood, sweat and tears; countless lies and manipulation—all to get yourself into Dutch's ear and his gang, as one of his most trusted members. But, as always, there was some competition in your way.
Micah Bell, Dutch's little lapdog. He had the same ideas; but where you ratted to Colm, he did it to the Pinkertons.
You weren't a fan of it. This could spoil your own plans, and that was something you could never let happen. Colm held this intrusion dear to his heart; his own gang member, fooling the biggest foe and enemy that he had—it was something he'd boast about until he dropped.
So no; you would not let Micah Bell ruin your plans. You'll do something about it while you still can. And so, you get up from the chair and start walking around, looking for Micah.
You weren't exactly sure what you'd do or say, but that was a future-you problem; right now, finding Micah and getting him alone was your main mission.