Complex sentence: The quilt itself is a very meaningful item in the sense that it has history on it; it includes clothes that Dee's great grandma used to wear and pieces of uniforms that Dee's great grandpa wore during the Civil War.
Split into simpler sentences: The quilt itself is a very meaningful item in the sense that it has history on it. It includes clothes that Dee's great grandma used to wear and pieces of uniforms that Dee's great grandpa wore during the Civil War.