My daughters jacket was stollen from school 2 weeks ago... I saw a little girl in Wal-mart wearing it tonight?

It was a Columbia jacket and its an older one. My daughter got paint on it so I knew it was hers. When I asked where her daughter goes to school, then said Dame right the woman got all defensive. I wanted to smack the woman, knowing she was lying. Problem is I didn't feel the need to write all over my daughters things because I resale a lot of things and it takes away from the value. I was so heated and pi**ed. I did get my daughter a brand new coat... of the same quality, and did put her name in the new one, but feel I shouldn't have had too... Would you have said something or let it go?