Very glad she has this up as a tutorial-can't wait to get started on this. I posted from another thread regarding the name of the quilt behind Jenny. My response was a Snowball quilt, pictured and discussed in BHG Creative American Quilting. The quilt was from the 1930's. Here is another link that says the Periwinkle was also called the Snowball back in the 1930's. Depends on the region and time period the quilting is done. It since is called the Arkansas Snowflake and The Kite Quilt patterns. The quilt in the link (that looks like Jenny's colorings and the one from the book BHG Creative American Quilting) is further down the page.
http://www.rugbeaterantiques.com/quilts.htm
Mine will be a Periwinkle, as I will be listening to every word and step Jenny shows in order to make one just like hers. Thank you for passing this info along.