It's hard to say who is overmatched.  All it takes is the rock-paper-scissors calculus...some problem has a hidden aspect that hits the weaknesses of the group going to deal with it.<br/><br/>I'm not inclined to bone up on a bunch of thief-emulating spells like Knock, because Rygel's opinion is that if the Monastery doesn't want anything to do with us, we shouldn't force the issue.  We can't know what forces they could bring to bear if pressed; and we have enough enemies already that we don't need to make new ones.  Even if they have a secret gardening technique they don't want to share, that's at best tertiary on his list of priorities.  It won't do any good to find out the formula to their super-fertilizer if wererabbits are stealing all our crops anyway.<br/><br/>He's basically there because the monastery seems the most likely situation for people to get in over their heads.  He's totally confident in Maestri & company's ability to screw with a pack of ignorant trolls, regardless of what's commanding them.  The monastery, however, presents a potentially unknown hazard.<br/><br/>If the vermin really are just vermin, well...I haven't looked at Latooni's sheet, but if she says she can escape from them, I'm sure she knows what she's talking about.