I had read Edmond's background. I'd suspected that, being an older and brawnier kid, that he'd likely been a thug for Lamm but wanted to get your opinion about it. Seems likely to me that Edmond was strong enough to keep himself at the top of the urchin pecking order, directly beneath Lamm's own adult cohorts.
I'm not certain how much personal interaction Dj'hân and Edmond might have had though. On the one hand they had altogether different roles in the gang and were at opposite ends of the pecking order, but on the other hand few of the urchins needed Edmond's protection more than Dj'hân.
I'm guessing that they weren't really friends since they had so little in common, but that Dj'hân benefited from Edmond's beneficence whenever 'that nice big kid' happened to be around.