They Would Be Happier

Wanda died on that floating piece of Sokovia. Ultron threw her out of the window as she crushed his heart, and her back was broken on the rocks of her homeland. She didn't spend more than a few minutes away from her brother, and the Avengers chose to see that as a small mercy for her. But after a few months spent in her heaven, everything started to fall apart. Pietro was brought back to life, but Wanda was trapped on the other side as the afterlife started to crumble.
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Multi-Chapter
Rated PG for fantasy violence and death (Rating may be subject to change)
Movieverse with elements drawn from comic canon
Canon-divergent from the end of Age of Ultron onwards

(I DO NOT OWN MARVEL. There's a second disclaimer of that inside, but I'm putting it on the front cover just in case)