Who murdered Lydia Varo-Braschler?

Someone made this great looking teenager forever 13 on July 13, 2001 in Big Lake in Skagit County.  She was visiting her aunt from Wisconsin.  Her remains were discovered a year later in 2002.  She was hit with blunt force trauma on the way to a convenience store from her Aunts House.  Her murder remains unsolved if you know anything about this case please contact the Skagit Valley Sheriffs Office at (360) 336-9450.  Please help bring this family closure.