Tellingly Ms. Harder is not seeking to  clarify her position, she's raging against Liberals. Something she does a lot of.  

This could be just a stunt by Scheer and Harder, certainly the former was very anxious to point at Trudeau rather than defend his proposed Chair.

http://lethbridgeherald.com/news/lethbridge-news/2017/09/27/harder-says-liberals-are-grandstanding/