If you haven't seen the poem yet, I suggest you go read it. It's the "I can't keep secrets" chapter fyi. There will be spoilers.
I think I almost figured it out
First of all, in the message before the poem, when deciphered it reads;
"yrros mI ti pleh tndluoc I tub enoyna llet ot ton em dlot ehS"
Which reversed it says
"She told me not to tell anyone but I couldn't help it I'm sorry."
So there is someone else involved in this that wants something to be kept secret.
Anyways, onto the actual content of the poem;
The words used are oddly specific, like Acumen
Heres the definition-
(sorry about my terrible handwriting its hard to use fingers-)
Sharpness..
Guess who else is sharp? Knife. So that's one possibility.
As stated in the poem, Suitcase is the Lost, so that's already there.
but just in case you don't know-
Tyro = a beginner or novice
Enigmatic = difficult to interpret or understand; mysterious.
The Analyst had something stolen from them, "the pismire solution", by the Deceiver.
Ant solution, so there must've been an ant problem?
And that would be Test Tubes lab from a few months ago. She did say that Mic somehow found her taser, so she could be a possible character.
The Deceiver, oh boy. Ok so this one is kind of obvious if you read her previous chapters. She claimed to hear a voice in the woods singing a song. That song was pretty much a sad version of Taco. The Deceiver is Taco, no doubt in my mind.
The Devastated is sorta difficult, someone who was heartbroken by the Deceiver. Pretty much everyone was 'hurt' in some way, but the most damaged is probably Pickle, so the Devastated is probably him.
The Misled is the hardest one because it's so vague, and notice how she wrote 'they'. So ( unless it's Paintbrush), the misled is probably the entire season 1 cast.
So a summary of who I think the characters in the poem are;
The Deceiver/Alone/Voice = Taco
The Infatuated/Devestated = Pickle
The Misled = Entire s1 cast
The Puppet = I can't answer openly due to threats
The Analyst = Possibly Test Tube
The Acumen = Possibly Knife
The Abstracted/Seeker/Tyro/Enigmatic/Lost, etc. = Suitcase
So then Suitcase met her?
hm...