Don't forget that Craven is carrying a stack of torches and lanterns (or whatever he bought from the Old Trading Post). Granted, someone has to light them and hold them forth to make the darkness go away.
>Oh... If Kerwyn uses Steal spell effect on Lenya to reap the benefits of her See the >Unseen, could she just activate it again to enjoy the benefits herself too?
Sadly, Kerwyn has to wait to level 6 to borrow See the Unseen from Lenya. See the Unseen is a level 2 spell-like ability, so under Kerwyn's Steal Spell like ability power, he'd have to be level 6.
Once Kerwyn is level 6, though, both Lenya and Kerwyn could enjoy the benefits of this power all day long, according to my current interpretation of the rules.
(Note the GM has to think about this interpretation of the rules a bit, as the Steal Spell Like Ability power is looking rather powerful, if you can piggy back on Lenya's powers).
Steal Spell Effect won't help Kerwyn, since Lenya's power is "personal".