Alive - You only live once

A girl with no parents, no home. Just herself and the world. Lost, confused and and lonely. She once had a family but where did they go? As the sun set down she felt weak, as it went up she felt like the most strongest person alive. But didn't last forever. What was it, why did it come for me, where am i? A girl who fases another dimension finds herself on earth BUT HOW.