Without complicating things, I hope: Iona covered up last round because she realized that if she stood up or moved, she'd be hit-- being hit means she'd start dying.  My in-character rationale is... well... pretty much based on the Bear attack scene in The Revenant.  I won't go into more detail except that Iona is not as much of a badass as Hugh Glass.<br/><br/>However... there's this (which I missed last round):<br/><em><em>Casting Defensively</em><br/>If you want to cast a spell without provoking any attacks of opportunity, you must make a concentration check (DC 15 + double the level of the spell you’re casting) to succeed. You lose the spell if you fail.</em><br/><br/>Even with the wolf trying to drag her off, and moving too much will give it a free snap at her... but, can Iona make a DC 17 concentration check to try to use CLW on Ria?  Or is "casting defensively" limited to personal or combative use?  CLW is the only spell she has left until after resting, and she would try to save someone who's obviously had their throat torn before saving herself, even if doing so costs her a hp and puts her unconscious.