After further testing; it is indeed yet another bug tied to knocking her out during the raid.Because she's a permanently hostile NPC during the raid; permanently hostile NPCs by default
cannot be interacted with and
she remains stuck in this non-interactable state all the way into ACT II (which only updates after she auto-initiates her dialogue by being rescued).
But because the
'share our strength' outcome
does not auto-initiate her dialogue after combat, her state can never update through dialogue so she remains permanently non-interactable forever.
So basically she's a friendly ACT II NPC with 'permanently hostile' state still being applied to her, which makes her non-interactable by default unless she manages to auto-initiate her dialogue.
UPDATE;- If she is knocked out at the Goblin Camp before killing Ragzlin she works perfectly fine since she remains a Neutral NPC
- If she is knocked out at the Goblin Camp after killing Ragzlin she will again remain in her 'permanently hostile state' forever and also remain permanently stuck in Ketheric's throne room.