Only she made the decision to return to Hogwarts. Harry couldn't look at the gloomy walls of the castle that had been destroyed during the war. He preferred to focus on rebuilding the entire magical world from the debris. At first, Ron enjoyed the fame they were surrounded by and did not want to go back to school.  After one and a half years, he recieved  a lucrative proposition to play Quidditch professionally,  which he accepted with great  relief. Thanks to this, Molly could not reproach   or nag him anymore. In the end, he had a job that was not entirely consistent with her standards, but he at least did something.