Something has gone horribly wrong in the war against the Chaos Gods. They've penetrated far too deeply into the OTC. Some Tzeentchian scheme, no doubt. And it seems to be targeting the Rose Bowers. She can see it in the tapestry of prophecy, the way the timelines suddenly snap - 

She gets all the guests out in time. She's the target, not them. 

As for her Wings, well, they volunteered. 

The universe shudders with impact, and skips like a stone across the blind eternities until it settles in a completely different metacosmos. 

The dust settles for a hyper-instant, and then -