I was rewatching Society of The Blind Eye when I noticed a few of the memory bottles on the side. If you notice next to McGucket’s bottle of memories in the first photo, Preston Northwest’s memories are listed. In the second photo, Pacifica’s name is on another bottle.
Based on the tapestry that is shown in the last photo, I think that Preston and Pacifica had some sort of incident with Bill Cipher, and seeked the Society of the Blind Eye for help.
Based on the theory that the llama on the wheel represents Pacifica, there is a great chance that she might make a deal, or already has, with Bill Cipher.