Why did Ruby go back to visit her old house?

I don't think that Ruby should have gone back to her old house. She only went because she thought that there might be a chance that her mom would be back. But, she wasn't. When Ruby went back, she finally realized how much she had changed. Before she left the house she thought she was fine living there. Then after living with her sister in a nice house, she changed. When she went back to her old house she realized how bad the living conditions were. There were drugs and empty beer bottles everywhere. It was infested with bugs and rodents and was a total mess. Once she went she knew that it was a bad idea that she had Nate bring her there. She didn't want him to see her breaking down. Though this did give Nate insight on Ruby's old life.