arthkael was kind enough to submit a list of (most of) the S2 Carmilla story lines. A huge thanks to them! I had forgotten about more than half of these so this really does help put some things into perspective.
Hi, Boss, hereâs a list of the things that happened during this season of Carmilla, with the still unresolved plots (up to episode 34). Itâs probably inaccurate and incomplete, âcause I shoul have rewatched the whole ordeal, but I didnât care.
The murdering of the VoS kids (unresolved)
Perry has a latin prophecy cut on her stomach, she tells her friends about a dream where crows were eating her and the VoS kids (unresolved)
Lophii has admirers and LaF is still  mentally connected to it (unresolved)
Matska comes to Silas and says that sheâs there to sell part of the college facilities to Corvae Corporation in order to save the school from bankrupcy and because the late Dean wanted it
Apparently Mastka finds Perry familiar (unresolved)
The library folds itself out of reality when the Corvae SWATs try to get the books. Apparently Carm gets stuck in it while running from Vordenbergâs minions (unexplained)
Mattie knows whatâs happening in the Anglerfish Pit and berates Carm for her ignorance (unresolved, if Iâm not mistaken we were never told what Mattie knows about the pit)
the Corvae guys are in the pit with drilling equipment and talk about âThe first Gateâ
it seems that SumSoc isnât a secret society that trains warriors, but a college sisterhood that has insane traditions
Baron Vordenberg seems to hold a grudge against Carm because his ancestor loved Carmilla even when she became a monster; Matska says he was a necrophiliac.
LaF frankensteins JP in Willâs body because âGee, that would be coolâ
Crows attack the Anglerfish protesters and Perry (unresolved)
Danny enters the Board as a representant, probably she quits to become the commander of Vordenbergâs army, but during the episodes we are never told if she left the Board or not (so, unresolved)
The board has the power to outvote Matska and the Dean, but when it comes to outvote Vordenberg they canât/choose not to. Also, apparently decisions canât be taken if a representative of the students isnât in the Board, so⌠(???)
This simply annoyed me, but it seems that Laura forgot that Carmilla was a Roommate From Hell
Various scenes where Perry is shady (finding the files that can shed a bad light on Mattie, framing Mattie, telling her she has always been a murderer, manipulating Danny, closing Carmillaâs call without telling LauraâŚ)(unresolved)
Vordie is souping up his soldiers with something and we still donât know what it is, maybe the fish blood (unresolved)
Mattie is in Perryâs dreams (unresolved)
Apparently the Corvae guys retreat, and Mattie says that Vordie would never ally with a powerful Occult conglomerate, but it seems that the Baron itâs not above doing that, so here the Corvae guys again, that apparently kill the Anglerfish.
LaF has dreams about a Dead Man in the Dark (unresolved)
Perry blacks out and finds bloody footprints in the apartment. More or less in the same timeframe Vordenberg tweets about being visited by a woman covered in blood. After talking to Mattie, apparently she blacks out again and she wakes up in the north quad, where Dannyâs sisters were killed.(unresolved)
in episode 30 Mattie said that she was starting to remember what happened the previous night after her talk with Perry, but we never knew what she was meaning (so, unresolved)