She didn’t really have anywhere else to go either, at one point Ginny and Harry went back with her to her Doughty Street and she showed them around while she gathered more of her things she left behind. It was really nice showing them this place eventually but they hadn’t realised she had felt sad because this was the first time she had gone back without Malfoy being there or at least expected to be there. She didn’t go back to the bar anymore either, it may have been her place to feel free but that didn’t feel the same without him either and the idea of still going and having to think about him was a hundred times worse. So she just stayed at the Burrow and buried her head in school work and chores around the house. 