 Tuesday on social media, the 32-year-old confessed that she was drunk during the performance and will be checking herself into rehab to get the help she needs. That was not me last night, she writes, apologizing to MLB, all the fans, and the country she loves so much. The four-time Grammy nominee finished by saying, quote, I'll let you know how rehab is. I hear it's super fun. Jason Athanson, ABC News.