I'm not aware that she did. What book was this in? Was it in the show? It was in Young X-Men #12. Sooraya died from complications that arose from the Magma incident (in which Magma accidently turned Soo into glass and shattered her to pieces, but then put her back together again after realizing her mistake) and was brought back to life by Ink, who revived her using a tattoo of the Phoenix Force. In the same issue, there was shown an alternate future in which Sooraya's resurrection somehow corrupted her, and she went on a rampage, killing Wolverine, Anole, Graymalkin, Emma Frost, and Ink. Apparently, the Phoenix Force made her crazy.