If covered in gasoline and near a magnifying glass... About 1 AU.

We do have experimental reactors that use magnetic forces to keep super hot plasma away from their surface area. (Magnetic Confinement Fusion) Scaling that to a space ship and making it functional would present some challenges. But assuming mankind…

It depends. In the Anime films, the character is fully cybernetic. She was Asian originally, but her entire body has been replaced with tech. So it doesn’t really matter what she looks like. Other than she needs to be fit, in order to perform her agent tasks.

In the Manga, she’s mostly cybernetic, but still partially…

They don’t care if it is real or not. They just want some sandwiches.