How to Obtain Mary as a Decoration and Complete the Sorrow Quest

As a Decoration

If you want to get Bloody Mary as a decoration for your settlement, you need to activate the Seasonal Pass of the episode "Blood Moon" and obtain a Bronze key from the Basic ticket.
 

Then, progress through the storyline until you reach the Kitchen, where you will find a Bronze chest. Inside this chest, you will find Bloody Mary as a decoration for your settlement.

As a Quest

To complete the quest titled "Sorrow," if you are unable to click on Bloody Mary for interaction, please ensure there are no objects placed nearby that might be blocking her.

If there is an object, try moving it, and then refresh the game. This should allow you to interact with Mary and continue with the quest.

Happy gaming!