Hey [@Fairess], thanks for the interest! Your character looks very promising~. I don’t have too much time right now but yes, you are on the right track. I’ll just write a few quick comments for you to think about. 

Bond of the word

She can’t literally manifest because we don’t have teleportation in Essence but she could get the call telepathically.

“Besides the ability to speak to Roanne, the ward also makes her aware of death that happens within a mile of the ward.”

Unlikely because angels don’t usually see or sense essence. We can stretch the limits if you insist but it’s been highly unusual for angels so far. Their own essence is naturally so strong and bright that it overshadows everything else around.

“So long as she has the blade in hand, it protects her from essence drainage by other creatures.” 

Again something that doesn’t make much sense if the rules so far are considered, but you could say a human enchantment was placed on it?

Also I notice she’s quite versatile spanning in abilities from purely guardian ones to the resistance of a battle, the mind-reading of tamers (like reading violent thoughts) and miracle angel (the ability to use her essence offensively). I’d say that to be able to do those she should be able to remember a past life or two if you want those things to come natural to her. 

Lastly I just wanted to point out she doesn’t need to be born in Heaven as that’s been decimated since the Great War and only a handful of angels repopulated it during Judas’ War. If she is though, it’s very likely she knows Toki.