I couldn't see the pics here at the forum, apparently 'image station' doesn't allow images to be called from their servers. But I followed the links and saw them just fine.
Unfortunately it is very difficult to tell if they were breeding or not, as there are no good pictures of their tails. It certainly looks like they may have been trying though, but without actual visual proof of their tails locked together there is no way of knowing until the female either looks obviously gravid or pops you out some eggs.
I don't know much about Brooksi's, I have mainly Cal kings, but you mentioned that they are currently together in the hide box. Is it safe to keep brooksi's together all the time? I had one, a young male who at about 16" long happened to come close to a slightly smaller cal king youngster while being held in opposite hands by a friend during cage cleaning. He tried his damnedest to eat that snake, even though he had been fed just the day before, and was in no way hungry. He was a sweet guy too, not usually nasty at all. I keep my kingsnakes separate unless they are breeding, I have read about and heard about too many losses and accidents to do otherwise.
Good luck to you though, hope she's gravid for ya.
