Board Thread:General Discussion/@comment-46475443-20200729003837

I haven't read the light novel, so I only know what I've seen in the anime.

Since Satella was the one who summoned Subaru to that world, she must know about other world(s).

I then ask myself to what extent does Satella know about the real world. Since she knew who Subaru was, in order to summon HIM, she must know about what he did there. So, can she watch other worlds and, even better (or worse, idk) watch other people's lives? 