Ellie was a mutant with psychically based powers. The full extent of her abilities is unknown, but her powers include:
Ellie was in Emma Frost's telepathy class suggesting she possess at least limited telepathy.
Ellie experiences precognitive nightmares and premonitions. It would appear that her precognition may have been limited to only foreseeing disasters, which may help explain her depressed and angst-ridden personality. She foresaw Genosha being destroyed, Kitty Pryde losing control of her powers and uncontrollably phasing down, and the defeat of Selene's army.