As an astronaut he had a massive agency behind him. He had thousands of support personnel at Beakerhead that could help him change his life.
With authorization from his boss, he commissioned a robotic version of his wife. He had all her qualities he first fell in love with instilled in the personality of the robot along with the spirit of the children he experienced around him.
Zoe 2.0 emerged from the colossal depths of the R&D department at Beakerhead.
There was nothing about her that Steve disliked. She was perfect in every way imaginable once you get past the fact that she's the work of a group of men. Her personality extracted from Zoe, who was living in a house that was made to mirror her old house, along with Steve 2.0. A very soul-less, dull lifelike robot. They didn't put a lot of effort into creating him.