Vaulted Ceiling - 9' wall below

[Steve Nestor]

I'm a newb...so, be kind.

I have a 3/12 vaulted ceiling that vaults over a 9' tall wall. This wall divides the master bedroom from the master bath. The wall is 9' tall...open above to the vaulted ceiling. The ceiling above the wall is about 14'...give or take. I have the two ceiling planes connected...but, there seems to be an attic wall built - that I don't want. My ceiling plane has a wall size hole in it...which may have been created when I deleted the attic wall. Honestly...I'm not sure why the hole is there.

Do I have to use a "half wall" and change the height to 9'? Or...is there some other way to accomplish this.

Any suggestions?