I'm not sure what she means by that but that's her complete Chicago Tribune column regarding the Swallow quilt block.
The Swallow block can be found in Electric Quilt's Blockbase program as #2646.
Swallow is not a hard block to make being made mostly of half square triangle blocks. I put it together like this-
Templates for a 6" finished block are available to download here. The half square triangle blocks finish at 1 1/2" so you can really use any method you want to make them. The center is cut as a 3 1/2" square and the two corner squares are cut at 2". I suggest using the templates for the lower right hand corner section.
Here's an antique block from the Spencer Museum of Art.