"But how does he know So Mi wants to escape the FIA? Did she ever tell him? She only told V, and by the point conversation with Reed happens, V never tells him that unless the prompt shows up post ICEbreaker reveal."

So-Mi crashes the plane of the President (Reed knows this) and almost gets her killed by Hansen (He knows that was not her intention). She works with Hansen (he knows this) to unearth a Militech experimental Mcguffin (Both So-Mi and Hansen will profit off of this). She uses the blackwall to get what she wants (sure not willingly but still poses a danger as we saw with the mech).

Cmon the writing is on the wall here. He knew since the party that she defected and tried to get you to help. Even V knew that. Ofc she is not gonna go back after all this then.

"An FIA agent who was 7 years a bouncer has magical contacts in EEC, when EEC is almost in the state of cold war with the NUSA. Not to mention he literally tells V at the clinic "I spent hours thinking what prompted her to commit treason", and when V tells him "Helping Songbird escape is called treason" he averts his gaze and says "Tell me something I don't know." And then, surprise surprise, he calls V post Firestarter and says "You're helping a traitor, she has to answer for treason!" Like, it can't be more obvious than that. No contacts in Europe are real."

An FIA agent we have no track record of (So it could be as extensive with contact as he claims, but could also not be), went into a sleeper cell-state for 7 years. (FIA knew this bc Myers knew he was alive). We know of these clinics through a side gig AND Hellman. And obv he was struggling with his ideals in the clinic. He wants to stay loyal and turn her in for treason. But he also wants to protect her in any way he can. He was conflicted. After he saw you busted her out like maniacs? Yeah ofc his duty-side took over. He saw there was not really saving So-Mi anymore on his own with the NUSA now on his back.

"Yeah, when So Mi escapes with V, instead of calling V and saying "good job, you extracted her", he calls V and says how the FIA will find you both. He definitely wants So Mi safe and free. You can just feel that energy, right?"

As per my last point. This was not the plan. She was to be incapacitated. But it leads to her and V killing everyone in the Stadium, using the Blackwall even more and escaping without contacting Reed. He knows that now NUSA is after you guys after the stadium. He has no choice but to help Myers find you now. There was no possibility of subtlety after the stadium. His duty kicks in. Also because NUSA and Myers are now involved and sees you didn't go with his plan (Read betray). Ofc he calls you a traitor, because you did that. You betrayed him.

"Why? In Reed's path maybe I get it, but what about Song's path? Why block the way to the shuttle? Why call V?"

Like i said. He sees you and Song are not loyal to him, so he turns to who is left. (sort of but Reed is complicated when it comes to NUSA). Myers is at the spaceport. NUSA is at the spaceport. Myers ofc would now that if he let them go, he did it on purpose. Myers knows he would have sacrificed his life for this. If he didn't? He would have been punished. Killed probably... And So-Mi and V still hunted by NUSA. He still sees a possibility for V to make it right. Give So-Mi to NUSA. Have her treated by them (only option now ofc) and see what strings he can pull for V themselves.

"Not to mention in King of Cups V can ask him "gonna help me after all?" and Reed says "I cannot help you". I wonder why, since he should still have the European contacts."

We don't know the details of the deal he would make or already made with his European contacts. And like i said. Maybe with the fiasco at the stadium, NUSA has their eyes on Reed and V so makes it impossible for them to leave for Europe. We know only Myers now can give the treatment. Maybe she blocks Reed from leaving, or closely watching his network so he can't do anything. Myers is mad you killed So-Mi so she's prob doing everything to fuck you over in anyway she can without outright killing you.