I want to touch on this again...before I Knew she was a chosen (heck before I new it was a she) I assumed these two could take out the ruler easily...at 14th level she is a druid 14, he is a rogue X, Shadow dancer Y, Assasin Z (I would need to take some time to reporduce that character...and there way of being evil assasins was for him to sneak in, her to come in as a bird, wait for the person to be alone, she codzilla the person for 3 rounds, and if (Normaly a big if) the enemy was still up they got hit by his death attack....
now as in any other setting I assumes that would sucseed as an assasination attempt...but you assume any assassination would fail...why???
Edit: Ok, so I stole my roomates FR CG 3.5 to look up Lady Alustriel...and she is a CR28 chosen wizard/sorcer so if anything I just proved my point...by running a game with only the book I looked up the city and it said nothing about her being chosen or uber epic...it was only when my roommate told me to look her up int he index I found the stats (about 100 pages after the city)...
SO anyone here not see a problem? anyone?
How do PCs take out powerful villains? With a solid strategy, and abilities/spells/allies/items that work on synergy, i.e. everything works like a well-oiled machine. If you want to see how the Mighty Chosen may be laid low, I recommend reading 'Silverfall'; it deals (among other themes) with a Realmswide conspiracy that also involves some low-level, crafty merchants among the "top tier" (plus a number of memorable scenes and er, how to say it... quite eccentric villains). One of those merchants is a particularly nasty as a villain; not because he's a high-level character, but because he's downright *nasty*, unscrupulous and has money to spend. And that's an important point, too -- those two 14th level NPCs would probably have enough resources that with a cunning plan and patience to spring their ambush on just the right moment they might succeed... just as a couple of 14th level villains might, with luck and the right resources, catch a 28th level PC by surprise.