Greygal appeared as a guest panel member on High Drag Episode 44, posted on 2014/11/17. The Greygal/Redemption Road centric segment starts at 1:11:55 and lasts for about 36 minutes.
See the full original post here: https://highdrag.wordpress.com/2014/11/17/hd-44-g-is-for-greygal/