Naah, who gives a shit about human drama. Also Emily is heavily foreshadowed to become a Superhuman anyway.
My thought has always been Ella's description of Emily:
1. More compatible than MC and Ella:
Not the easiest thing to parse, but it points to her becoming a special Superhuman.
2. Ella doesn't know which monster she is compatible to:
Up till the last update, the easiest assumption was the Lord of Dark.
If Ella doesn't know the monster, it's probable that the monster is hidden from her vision. If I had to bet what trait would be capable of that, I'd say Dark which is known to be capable of hiding it's nature/power.
Since last update, there's also the possibility that her monster is actually unknown or "forgotten" and that's why Ella can't pinpoint it. She may be destined to inherit the power of some garden variety god, similar to Henri.
To be honest, I find the Henri situation more appropriate for Emily based on Ella's description, but a Darkspawn would be cool and she fits.