Varus Sister and the Chained Champion

So, I know a lot of people have wondered when we were going to see the Sister of Varus after his lore update, specifically in his story when he ends up in Shurima looking for his sister. You can read the story from this link (I found it rather entertaining). https://universe.leagueoflegends.com/en_US/story/varus-color-story/ When I first read it, I didn't think much of the location, until I watched a Video by Necrit, which mind you I knw is dated and things Kind of change since the Aatrox release, but I want to ignore that for now. Oh and here is the link If you want to watch that video_( which I recommended in order to understand my theory at all_) _https://www.youtube.com/watch?v=m0vISzPocRI _ . So anyways when he explains how the Well had already been unsealed before the ascension of Azir with the help of Sivir in the lore video made by LoL (the link https://www.youtube.com/watch?v=CYyuH1Bp2ZI ) From here Basically you can say that Varus's sister is gone, venturing somewhere in Runterra. Or is She?

When I was rereading the champion spotlight and looking at the second champion teaser_( link provided https://nexus.leagueoflegends.com/en-us/2018/08/champion-roadmap-august-2018/ )_, I realized that it looked like female legs and that the chains and flooring look often Demacian. On top of that, Demacia does not like the existence of magic all that much, despite the fact they have a secret faction in their army that does use magic, and has a yordle in their ranks. Be cause of that dislike, they make good use of petricite. Taking that into account, Wouldn't it make sense that the champion locked up in chains, can use very powerful magic, and that they are alive because they cannot kill them, or the secret magic using faction of Demacia is trying to a) use the magic or b) learn from them but cannot trust them.

So my theory is that a Piltover explorer fell into that well and broke the seal before Cassiopeia had opened the crypt and betrayed Sivir. That the explorer had become bound to the "Dark kin" and much like Kayn, still has some form of control, and was able to seek for help in Demacia, because they figured it was some kind of curse and Demacia was known for petricite. But because it was such dark powerful magic that could not be killed, the best Demacia could do was to seal Varus's sister somewhere in Demacia. Now it is a very long stretch to combine the too, but when you start to add the new lore to Aatrox (I know I said to ignore it but now that you know where I am coming from you can start to add it in) It would make sense that one of the these higher beings created in Shurima would be sealed in Shurima. SO it still kind of fits into the new lore added and adjusted when Aatrox was reworked.

Now it is just a theory, but maybe more of you agree with me, and I am just introducing it, maybe one of you can do more research and prove me wrong altogether, or maybe back me up, or maybe it makes you think of a completely new theory as well, but I just wanted to give my thoughts on this topic, cause it was not gonna do me any good staying in my head.