Elmo...

[burrahobbit]

Quite. Here is a quote from CT.

By the emendation given in note 2 Vaire appears, and is clearly by the arrangement of the passage the spouse of Mandos, as she remained; and Nienna now becomes solitary, again as she remained. Of course it is altogether unclear what is really meant by the terms 'brother', 'sister', 'mother', 'son', 'children' in the context of the great Valar.

What I said above pretty much only applies to incarnates, which the Valar aren't.