Factions don't disappear/ can't make peace?

I broke away from Battania right as they were crushing the Sturgians in a war. They made peace, but left Sturgia with 3 towns, 3 castles, and 9 loyal clans including Ragavand's.

I have managed to defeat Sturgia 100% completely and totally. I took all of their towns, swayed all of their noble families except Ragavand, and defeated all of their mercenaries (which is all of the mercenaries, 8 clans of them).

I swayed the last two loyal clans after taking the last settlement, so only Ragavand's remains. I have also captured or killed every enemy lord. All of the mercenaries are in my dungeons, as is all of Ragavand's clan except his daughter Valla who died in battle. I literally made a spreadsheet and checked it against the nobles in the encyclopedia, and they are all accounted for.

They have 0 soldiers left, 0 settlements left, 0 clans left except for the ruler clan, and 0 heroes who can field new armies, and yet they still won't disband. Do they just... never disband? Because they're still demanding tribute to end the war, and that has 0% support. Am I stuck at war forever? Would executing Ragavand end the faction when it tries and fails to elect a new ruler?

submitted by /u/Particular-Cry-778
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