This kinda cliché "I trust them anyway" development doesn't really feel earned at this point. There should've been a bit more development to make such a statement feel substantiated with something besides "those are the protagonists so of course".
I mean, her life was literally saved the knight, no? We’ve seen Frost go out to fight and try and save ppl (albeit not in the best way, but still)
It’s obvious Frost isn’t as malicious as ppl paint her, and trusting the person you’re married to and share a roof under over a person you literally just met (and also confessed they don’t know WHY frost even killed “his” dad) makes enough sense to me
And it’s not even blind trust—“I’ll just ask Frost what happened instead of immediately leaving “him””— is basically what happened lol