Trapped in elf palace

I managed to break into the elf palace, killed all the guards, and tried to lockpick the second door. I had a "very good" chance of success but I couldnt get it, wore through 2 lockpicks. I exited out the first door, bought more picsk, and returned. I failed the lock picking again and then realized that I couldn't even go out the front door. Teleport magic doesn't work on the map. Any help?

Try tapping some drainage sewage looking bars on the walls. Might be covered by a bush

if you marked other locations then you can recall out of the palace thats what i did the instant i killed her