Originally Posted by Epona
There are:
mortal aasimar (planetouched origins, the equivalent of tieflings, usually of human ancestry)
Aasimari Devas (immortal angelic souls in a mortal humanoid form)
and "angelic devas" - celestial angels and servants of the Gods, usually separated into three different orders.

I am not sure if current lore really differentiates Aasimari devas and angelic devas anymore, though - the difference between them is... somewhat minimal and it gets confusing when they have virtually identical names.

If you ask Aylin if she is literally the daughter of a god, she says that she was "ripped from Selune's celestial womb" - quoted roughly from memory - and considering devas can be the servants of Gods, it makes sense that the Gods may create devas themselves. Usually aasimari devas are suppose to lose their memories when they reincarnate and they don't always have the same appearance, but Aylin might be a special case as narratively it wouldn't work quite as well if she didn't even remember who she was, or if Isobel hadn't recognized her. Fun fact: Aylin is a Turkish girl's name, and it means "of the moon." smile

For Act 2, a lot of Ketheric's background is buried in journals and letters:

Interesting - seems the division between Devas is a 4e thing that I didn't know about, thanks!

With true resurrection the soul has to be willing to return and the return not opposed by the god who claimed the soul. (Auntie Ethel's threat to kill you and raise you and kill you again is an empty one - you can't be forced to return to life)

One of the reasons Isobel has had her memories erased might be that she refused to return when either Selune or Shar called her back to life. Why hould she return to a father that rejected her lover? Or because she returned like Buffy the Vampire Slayer did - back to life but not happy about it because she was evicted from paradise.

And, what I think is most likely: Isobel is not actually alive. The darkness she refers to in her diary might mean that she's undead. Which would make sense since it was Myrkul that brought her back and Balthazar was involved in some way.