Keep an eye on the SLW and make sure she isn't actually attacking your BO. I got 2 RIR, 1 BR and 1 BO together at 3 days old. All of a sudden at almost four months old the RIR's, both of them, attacked my BO and actually got blood around her head in several places. I was outside putting up some fencing on their kennel and saw them literally attack her. She was screaming!!! They did it repeatedly until I put the two in the coop...they were rehomed that night while they were sleeping. I cannot tolerate attacking birds!!!! These attacks were not the ones where they are vying for pecking order. They were down right mean.
I hope you dont' have this problem as it is scarry!!! I was going to get some SLW, but after your experience I think I will stay with my BR and BO.