I think that's what's underlying a lot of Wandas decisions There's a big question about whether Vision (and now her children) can even survive outside of the Hex. She clearly doesn't seem to think so, which is why she's playing along there where she can be happy.
Interesting that we have two different "bads" growing now -
Director Hayward is clearly on a completely different page than everyone else. There's also big questions on what was happening to Visions body when it was recovered. It seemed pretty clear that there were some experiments going on.
It seems another force created the Hex in the first place, and Wandas grief has been driving it. We have no idea who created it or what control they have - It seems Pietros "recast" return (jaw dropped) is down to whatever this player is too, and not Wanda, so they must have pretty insane level powers to be building this reality and crossing people over between alternate universes.