It's a fair assumption that Adelise/Oriana/Lydia notice Silas's attack as they're expecting him, while the bandits are too preoccupied to notice. There're two main options here - break the ruse and go all-out attack, or pretend nothing's happening (which requires a bluff check).<br/><br/>In either case, I'd need Meliai to give Tsoni's surprise round action and hopefully finish what Silas started.  :P