Dragon age awakening AVVAR DEEP CRYPT

hi guys i was wondering if anyone could tell me where to find the key to get into avvar deep crypts i need the key from the lady i think where do i find her

All the information you need to find the four keys can be found here :-

http://dragonage.wikia.com/wiki/Key_of_the_Lady

I won't post the information in the post so I don't spoil it for others.