I've found some solutions to her issues:
The first one I noticed was that she'll always be overburdened after consuming 2 units (whether they were in the tentacles or in her actual stomach).
-Fixed this by removing the "Digest" and "Extra" tag from all of the Tentacles in the Class.txt file and increasing her stomach size to six.
Another issue, being the major one was units not digesting unless she contained prey within her ACTUAL stomach (Being the "[Stomach]Body" in the Class.txt).
-The Cause of the issue is the highlighted part in the [Stomach]Tentacle1 
-By changing that field to: "[Connection]Body, Tract" All of the tentacles are now an extension of her main stomach and will begin digesting as soon as you swallow a unit (the digest button also works now)
-The only drawback to this solution is that you cannot contain your prey without digesting right away so you won't be able to fill the tentacles and her unless you keep devouring units before the digestion timer runs out.
(There probably is another way to fix these issue but it's hard to say since the new stomach system, is not done and it is pretty buggy sometimes. I got no clue if the Patreon Build has the new system fully implemented or not but if it is, it might fix this issue without modifying the "Class.txt" file so much.)
Here's the link: https://www.mediafire.com/file/y0hopenl0bugamj/Cultist+(Fixed).zip/file I got so eager to keep testing her out I forgot to send it lol.