I don't know if this has been brought up before, I havent seen it myself. But maybe that wasn't the first "ghost" Rhue has seen? What if the shadow jackrat in the pits Episode 3, and the man guarding (?) Slade's thoughts in Episode 5 were ghosts as well? It'd explain why their death is so chaotic. Maybe Rhue even knew them but refused to accept that he knew of them (which is why he perceives them as shadows?) but Lexus he ended up kind of liking so he didn't want to uh... repress his memory of her? And everytime you walk up to her in Episode 4 (her ghost) she runs away. The shadow guy in the pits auto-fought you for whatever reason, so did the shadow in Slade's mind, maybe it's because theyre forced to for whatever reason? And maybe Lexus didn't want to fight Rhue to the death (so to speak) and ran whenever he got close?
There's still alot of info missing to be more specific, stuff we don't know storyline wise to fill in the gaps in my puny theory, if it's even right. I'm even thinking those shadows are people Rhue has killed but didn't actually WANT to see dead, which is why they still sort of exist, because of the power of his sword and his desire for them not to die?
Wouldn't make sense with the shadow guy in Slade's mind... the idea it's the son of that market guy (too long since I last played, ugh) who Rhue's first mission as Arastotzi revolved around. Same sprite, we never did see the end results of Rhue kicking the guy's ass, maybe he accidently killed him (I forget, Sorya/Stoyko might've said something about Rhue not killing him after that incident... you know what, I'm just going to play the series again >_< )
