Michelle Obama received one of the biggest ovations at Sunday night's Grammy Awards. Her mother was not impressed.Marian Robinson sent her daughter a text after the show. Obama shared the exchange on Instagram Wednesday morning. Robinson wanted to know if Michelle Obama had met "any of the real stars." Obama's mother also said she only watched it because someone named Gracie told her about it. Obama replied, "I told you I was going to be on it."Obama captioned the post, "When your mom doesn't think you are a "real" celebrity."