Sibling responses here are good overviews of her views in this decision, but more generally, the liberal-vs-conservative view of the court is at least to some extent a media invention. 5-4 decisions tend to be big, juicy, mainstream-accessible politically oriented cases, so they get the most press, which leads to the perception that most cases are decided 5-4 along "political" lines. This is not true, though: unanimous decisions are the single most common outcome, and decisions that are not 5-4, or are 5-4 along some other axis, happen all the time, with justices predictably agreeing or disagreeing on certain issues in a way that's not aligned with the popular conception (e.g., Thomas and Scalia typically disagreed on fourth amendment jurisprudence despite being on the same "side").
