I've got to admit, I'm with Brent on this whole endowing human's with superpowers, even though I know it's been done in the comics. It should be based on a Kryptonian's DNA, not something you can swap around at will.
Not to mention that human beings aren't hardwired for that type of physical stress - Lo's DNA is what it is, so she shouldn't have bullet-proof skin and that much running around at speeds like that should've caused her heart to explode or something.
The only time this kind of exchange was done with consequences was with Jonathan.
Indeed, she should be a reduced super powered human, she shouldn't be as strong as Superman with those powers, cause she's (and any human) doesn't have Kryptonian's denser DNA structure.