Leland lived in California her whole life. She has never left the state or traveled for then 30 miles from home at any given time. When she found out about Massachusetts Academy she jumped at the chance to leave California and travel across the United States.
More Information Coming Soon
Reanimation: Leland has the ability to reanimate dead beings, restoring their consciousness, but not their souls.
Leland's powers apparently work on the concept of the Chaos Theory of Quantum Mechanics. In a jaunt through time (80 years into a possible future) she was scanned as both a flat-scan human and also a mutant within seconds of each other. Her only comment to this was "Yeah, it comes and goes."
Precognition: ability to see paths of causality to their ultimate conclusion, which allows her to alter events to prevent or cause certain occurrences; this gives her a sense of apparent omniscience. All she has to do is do one thing at one end, and it makes things turn out the way they should at the other end. Able to see the true reality. She is even able to view a person's real history at a detailed level. Ability to know very detailed sequences of events that will occur in her immediate area, causing her to say she "knows stuff." Whether her ability extends globally as well is still unknown.
Healing/Mental Awakening: Able to pierce the veil between divergent realities. She can enable others to see this, by clearing their minds in an unknown manner. Ability to restore the memories of individuals affected by changes to reality.
Immutability|Reality Warp Immunity: Leland is immune to reality warp.
Chaos Theory Rebounding: Presumably according to her if she tells anyone what she knows she will be struck down dead on the spot. (If there is any truth to this it would mean that her powers most likely rebound back on to her).
Blind Spots: However, she only sees in the future, not the past, and a few times has exhibited 'blind spots'.