The entire frame of this story revolves around Freya "wanting". Wanting glory in battle, wanting her family to not suck, wanting to bone Bjorn. But she refuses to do anything about it, preferring instead to let others "control her fate" and then alternating between rage from being used as a tool, and guilt over the decisions she let others make.
If it's not clear, I think Freya is pretty dumb. 
1. The entire story kind of revolves around her flipping back and forth in her bad decisions until

ultimately Bjorn just makes one for her.

2. She has no battle experience, (except like, for playing with her brother as a child? I don't know in what world that counts but okay) But still somehow the fact that other people have ACTUAL experience and might know what they're talking about better than her somehow never occurs to her.
3.

There is literally no reason for Freya to think that Ylva is the "traitor" except that Freya doesn't like her. All the observations of her seeing specifically a woman felt like she made it up to justify her train of thought. It was just so obviously a red herring that it wasn't even believable.

4. She would stop thinking people were lying to her if she would ACTUALLY listen to the things they're (

Bjorn

) trying to tell her without giving away their secrets to every single person around.
5. Her "subconsciously" being against using the healing salve is so stupid. It was an easy ploy by the author to give Bjorn an excuse to have to touch her, but the random psychoanalyzing of her guilt by a stranger and then the salve never being mentioned again was also weird. 

How, after all the nicknames Bjorn gives her, do we end up sticking with "Freya Born-in-Fire" the least roll-off-the-tongue name anyone has ever tried to say.
Which brings me to the dialogue. It was so cringe. First of all, it's a lie. There is no slow burn it is absolutely insta-lust. And somehow it turns to love despite the only thing them ever talking about is how big his ween is in various forms of innuendos. Alternatively, they keep alternating between dialogue that sounds ancient/mythological and then really modern sounding. 

Lastly, wtf was going on with her family? There just isn't any consistency.
Her dad wanted to hide her destiny to protect her I think? He literally said "If anyone ever learns, your life will never be your own!" but then also ignores her begging and forces her to marry an abusive man. 
Her mom

apologizes for choosing her brother over her but then immediately starts berating and calling her a whore before ultimately betraying her to save herself

 
Her brother

in the beginning at least had some sort of loyalty to her even if he was spineless, but the aggressiveness which he came at her toward the end was out of nowhere.