I have just recently found McKenna's lovely patterns. I had the same problem finding fabrics. When the patterns are first released, the exact fabrics she uses are available on her site and on sites that carry Hoffman batiks, etc. But after a while, Hoffman retires the fabrics. The kits with fabrics are usually very hard to find. But, that being said, she does list each fabric and the amount. Perhaps you can match the colors and approximate patterns by searching your favorite online store or brick and mortar stores that carry batiks. I searched for fabrics, made a chart form with the fabrics I found and now I am using that chart to go through my stash to find the fabrics I need.
I hope this helps a little.
Oh, and on her site under tips, she does give lists of fabrics from the kits, some have pics of the fabrics, others do not.
https://www.pineneedles.com/Fabric-Lists-s/1876.htm
The above link will take you to an alphabetic listing of patterns and Dog Park is listed. There is only a list of fabrics.