His question is warranted, and the fact that he asks that before anything else reassures Wanda that he is not badly injured and hasn't been ensnared by anything above them, yet.

"I'm not sure," she starts, knowing this is hardly comforting, "but I think the Singularity is acting up and affecting the Horizon again."

Truth of the matter, though, is that Wanda is well aware just how bad it looks that there are things chasing others within her own domain. Wilhelm would have recognized the red mist, and so she has to be honest with him.

"I let my magic roam free in changing my domain, so I am not in charge of making any actual changes to it or controlling what happens, unless I want to. Remnants of my magic — is out of control now. I'm trying to fix it."

The last sentence, she emphasizes earnestly; Wanda would loathe for Wilhelm to not believe her.

"Have you tried leaving the Horizon as normal?