Enoki
SOC-14 1K
Seems to me, if you are going to design a robot that does not need to breathe, you are going to design it for a number of commonly encountered environments which would include the vacuum of space. If a robot needed a spacesuit then that is one less spacesuit for a human being. You don't want a situation where a robot and a human need to fight over the last remaining spacesuit while the ship is venting atmosphere into space. Ingrid looks human from the outside, but her internals don't have to resemble a human at all. Most scanners would pick up that she is not human, unless Ingrid hacked into them and reprogrammed them to give a false reading that she is human, Ingrid has to be aware that such scanners exist, if she is caught by surprise then they detect her as she is.
Radiation protection would be more difficult to achieve. Ionizing radiation like gamma rays would require a fairly high level of shielding along with a means to bleed of the electrical charge as it accumulated. All of that is going to add bulk and weight to the robot.
Neutron radiation is a whole 'nother animal. Now you need something highly effective to absorb it and preferably something that doesn't turn radioactive as a result.
Both types would be present in open space, and the closer to the star or a world like a gas giant that creates some of its own, is going to make this an issue.
After all, robots used in nuclear accident clean up that weren't designed to work in a high radiation environment have failed pretty rapidly in use.
This would be hard to achieve in a human sized robot without sacrificing a good bit of internal space I'd think.