DEAR ABBY: For the past two years, my husband and I have attended a holiday concert with our good friend “Ellie,” who lives two hours away. Ellie recently told a friend of hers how wonderful the concert was, and now the friend wants to come to town to see it. The problem? We do not like this person for several reasons, but Ellie has chosen to invite this friend to attend the concert with her. We feel slighted. How should we approach this with Ellie? -- OUT OF TUNE IN ARIZONA