How to get the Mortal Shell 2 Genessa Shell

To get the Mortal Shell 2 Genessa Shell, you cannot simply find her around the map as you would the other eight habitable Shells. Instead, you must head to a very specific dungeon where you will obtain an item by defeating Sester Secundus, and then return that item to Sester Genessa in her arena in the Marrow Keep.It's likely that you'll find this item simply by progressing the story, so if you want to back out now and unlock Genessa at your own pace, then this is your chance to do so. Otherwise