I might take a gander through the flaws list and see what catches my fancy.
Also, DWARMIN, what sort of divine impulses do you think a Valkyrie's daughter would have? >_>
Do I make shit up myself? Do you have a suggestion? Or do I go normal goody-two-shoes Angel route?
Yeah, the list is just a lot of suggestions, you can make up whatever you think would be cool and discuss it with me.
...
Let's see.
I'm pretty Valkyries are definitely defined as more 'lawful' than 'good'. They're agents of Fate, not entirely good or bad. They choose who lives and dies (based on that persons valor or lack of-ironically, being a good warrior might get you killed, while a coward would live), and where that person goes after they die-but, they're servants of the dead, not masters. In other canon, Valkryies are also champions-they protect the dead, honor the Gods with their valorous deeds, challenge the living to prove their worth, and seek glorious battles against mighty enemies.
Some ideas
Possible Perks/flaws? (or just character traits for you to play.)
~Deathsense: You just have a feeling when someone is about to die...maybe the person will have an otherwordly glow around them, there will be a flap of wings only you can hear, or the winding of a distant horn, the gleam of a spear in the sky high above, or a single feather falling in front of you, etc. This was alluded to in your intro story, and you could play on this.
~Winds of Fate: More so, you may have an idea when someone is
supposed to die-you could have an innate sense of rightness about their death, that they are fated to meet it. You may feel a compulsion to end someones suffering so they can go to the afterlife...even if they might be saved, by some means, you know these means will be 'unnatural' and you'll feel that it's very wrong. A bit complicated, since what if your mortal half desperately doesn't want that person to die? Which side do you choose?
~Not your time: This is the opposite of the above-since you have free will (as a mortal), yet the blood of an immortal being, you disrupt fate by your mere existence. You may feel a strong compulsion that someone who is close to death that you feel
should not die-you could feel a strong desire to save them, maybe even feeling guilty-since on some level, the only reason they are going to die is because of your actions...strangely, it might be someone you'd really feel would be better off dead. Might also explain why your divine parent intervenes to save you.
~One Man, One Life: Anyone who violates the sanctity of death, or prolongs their life past natural means earns your immediate 'attention'. You may feel an unsubtle urge to restore the balance. You will fill immense pity/sadness at tormented spirits/undead, and a desire to send them off to their deserved afterlife. People who consciously avoid their fated death, however, you will likely be angry toward, perhaps enraged-you will want to destroy these people, on some level.
~Einherjar: A potentially different take on the above-maybe your powers attract you towards worthy warriors-either romantically, or merely practically. You could feel a compulsion to 'test' them-possibly, in a battle to the death. If you go all prose edda in here, you won't feel bad about killing someone you consider a worthy warrior, actually-since they go paradise when they die, and in paradise they prepare for an even greater war that will herald the end of the world (Ragnarok). So you're just doing the work of the Gods. This trait might, in general, just lead you to being extremely aggressive and somewhat fearless in combat-and not afraid to kill, if needed. Likewise, you may feel extreme dislike/disgust toward dishonorable warriors, and feel the need to send them to the bad afterlife they probably deserve. It should be noted 'worthy' does not exactly equal 'good', at least if you tend towards strict Nordic interpretation-an evil Tyrant who is otherwise a peerless warrior could command your respect, as much as a good man who is an average warrior.
~Cupbearer: You might have a very lawful tendency, and an interest in obeying the natural order of Kings, Man and God. Any sort of lawfully chosen leader will naturally command your respect, at least until they lose it. You are inclined to obey orders given to you by someone of a superior 'rank', at least initially.
~Animal Affinity: Given Valkyries are often seen riding horses (with wings or not), you could have a love of these animals-something verging on an elemental bond. Equines may, in turn, be friendly toward you. Valkyrie's also have close connection to avians-ravens, doves, hawks etc. Similar to above.
~Nail and Hammer: Valkyries traditionally wield a spear and shield, and you may feel more comfortable fighting with these weapons. Of course they carry swords too.