I put a summary about the reader/Heimdall's wife in the ao3 series yesterday, so I thought I could post it here as well.
You are a goddess of secrecy and hidden knowledge. You are a patroness of the dead. You hear their voices; you can summon their souls and when needed force them to give up their secrets. You can also immediate their voices, it’s a cruel power reserved for interrogation or drunk nights when you feel extremely petty. You can reanimate dead bodies, but that power is limited. You can give them back their breath and heartbeat, but you cannot bind the soul to the body again. It's useful when it comes to keeping the dying alive long enough to heal - you've done that before. Your symbol is a willow; you can hear every secret whispered into the wood, traditionally you never tell it to anyone, just listen, offering relief to those who couldn’t bear the burden anymore. You can also bend its branches to your will, but you never found an use for that, the power is more symbolical.
