[It's not that she's been deliberately hiding it, it's just infinitely harder to talk about. She wants to remember (comparatively) better days, Pietro and Novi Grad as they were before everything got turned upside-down again.

No one truly won that day. If Thor hasn't been spreading the story around, she is grateful.]

Ultron wanted his cataclysm, his 'peace.'

[She practically spits out the last word, so much bitterness in her voice that it's obvious how deeply personal her hatred is. He'd lied to them, used them, killed her brother, and destroyed her city. And all of this when they'd barely escaped Strucker...is it any wonder Wanda feels like she's constantly at war with herself where Loki is concerned? How terribly ironic that the 'god of lies' would be her soulmate.]

He was going to use Novi Grad to destroy all life on Earth. The Avengers stopped him, but no one could save our city.

[And just like that, all the bitterness and hate deflates. She cannot say that this is how Pietro died, not unless Loki really pushes her for a more direct answer, but does she really need to? Her pain is too raw to be merely the loss of a place.]