I just listened to the Plumb and she is clearly pretty nervous. I would really recommend for her to do what most of the big podcasters do and get an assistant. The assistant really serves very little purpose they occasional look something up or deal with some technical stuff. The real purpose is just so the host is comfortable and has some one in the room, just to help them relax and not feel like they are talking to the walls. It really helps things flow and for the listener it changes it from listening to a person talk to them self to them talking to you. People just take on a different mannerism and speech pattern when alone. When someone else is in the room just so you can look at them it comes out naturally. Overall I think she will have an interesting perspective and hope she gains some confidence and doesn't try and do it the hard way and go it alone.