With the information in this thread, I was able to get past the second door with my solo level 76 Ranger. However, I could not get out the final door to leave the Estate. It seems to be the same issue as the second door. After the party member says she’ll put her elbow into it, nothing happens and I’m stuck inside. When I approach the door, I see the same green outline as at the second door. If I try to open the door, it tells me that it is stuck and my only choice is to click on “Leave” to shut down the chat box. I logged out and came back in again to kill the Mouth a second time and I still couldn’t get out. I guess my story ends here, since I have no desire to keep doing this part of the story over and over.