Hmmm, Well. If She Can't Disarm It, Yor Cleric Should Be Able To Cast Resist Fire; Cast It On One Person And Set The Trap Off. It Shouldn't Damage Them At All. Then Go And Leather The Mage...

In That Quest I Found The 1st Fight The Hardest, With The 3 Mages.
Werewolf Island (Mendas' Quest) Is Fairly Easy, All Up Until The Final Fight Which Is SOLID! IMO Harder Than Sarevok At The End.
And Durlags Is... Well... Just A Nightmare...

Make Sure Your Theif Has Triple Figures In Find Traps, Or Just Dont Bother...

Your Theif Should Have At LEAST 80% In Find Traps. Remember.. Thats The Minimum!!!