Dalia was "born" when a experimental Einstein-Rosengate device imploded, and then raised by the scientists responsible for the experiment. She was raised in a laboratory and didn't really get to come out on her own until her teens, but has since become very social and excited about the world at large.
She is very intelligent and curious, reading books about complicated interdimensional physics at a very young age. That curiosity has stayed with her and nowadays she's doctorated as a fully fleged dimensionologist on her own.
She loves baking, sewing, and reads a lot of trashy romance stories, even if her favourite genre is science fiction and space opera. She's re-read all of Isaac Asimovs works many times over.
Due to her unconventional birth she has certain weird powers. Mainly she has a conduit to an "upper ideal plane" of "Health" that allows her to produce rejuvenating radiation that heals people. Secondary she can manipulate space around her, which she is less practiced at and mostly uses it for teleporting.
While she is a superhero in certain AUs, in the "main" verse she is a scientist working to study other dimensions, and hosts lovely pot-lucks for her friends at the weekends.