I believe that might be a fault on our part. Kaun would know more about that portion though so if we are incorrect about what we looked up we will surely change it :P. Though, I personally see it as the two create the other aengul or daemon together and they are children in a way but not in the same way mortals really can relate to or even explain. As then we would have to go into how teh aenguls or daemons are created after the first wave of them that were created by the creator. I don't think we should get too far into lore in this one though. Since it simply raises more and more questions. Though it's more of a flavour text to explain how she came to be. If the aenguls/daemons come about a different way though i'd be willing to it with Kaun as it would be completely our fault for having misconceptions with the lore for Aengul and daemon birth. But for now simply see it as I stated above, they don't physically mate but rather create the offspring themselves. Though for reproduction section, there are aengul and daemon that have children with mortals, as that is the only way Ascended for example are able to ascend needing aengul or daemon blood. Though it is more of an OOC thing than IC thing it's still in lore having higher beings produce children with mortals so i'm sure it's possible.
I will answer these two together. She doesn't directly interfere with the realm and cause giant large attacks to tip the balance, but as all other Aengul she gains followers who do her tenants and spread the neutrality of man. And not tip it too far to one side as some holy or evil folk may blindly follow the other and if the balance is tipped the world will go into chaos. Though as the aenguls and daemons had done back in aegis and interfere if the balance is tipped too far. Maybe not in such a way as that but rather in different forms besides attacking pew pew. This also goes into Sky's question. She wouldn't really even be an Aengul or Daemon but similar to the aspects be more of a neutral aengudaemon, though she interacts with the world more similiarly to Aenguls than Daemons. As Daemons interact with mortals in a much stronger sense and tend to think themselves higher beings, and are a bit more abrasive. She is neither good nor evil, much like Aenguls can be "Evil" technically and Daemon could be "Good". Though I do hope you see what I mean no? If that didn't clear it for you two. Reply again or add me on skype where we can discuss it in more detail. My skype is Booklight12 .
-Edit For roxses part, like the other aenguls and daemons they can have similiar goals infact I am sure there are a plethora of similarities within the number of aenguls and daemons that exist in the seven skies. But these are simply the ones that effect the mortals now. Much like Aspects wish for balance and the triumverate wish for balance. But it is a different balance. Aspects wish for balance in nature, and the Triumverate and Eshtael may wish for balance in a different manner and they do it in seperate ways. So it's similiar concepts inwhich they go about their beliefs. But in differ in the way they approach it and the deeper meaning as to why they do it and how much they effect the mortals. Eshtael for example only effects the world if absolutely needed. Eseeria effects the world by gathering mortals and getting them to effect the world for her.