Wowzer, scfirenice! That's great!
Good advice above. Wear something you think you look nice in and that makes you feel relaxed, just not in sweats or Daisy Duke jean shorts (just kidding!!)
Officially, the big thing Jenna doesn't want folks to do is send out the draft press release, or commit in any way to a release date at this point. However, you can say something like "we're hoping to have Stories of Strength available for purchase by the middle of October."
Jot down some notes -- 'talking points' you'd like to cover during the interview. You can cull some from the draft of the press release. Stuff like:
- Jenna, and why she started the project
- what the project is all about
- 100% of the profits to the Red Cross disaster relief fund
- Lulu's contribution of their profits
- well known contributors and their accomplishments -- example: Hugo and Nebula award winner Orson Scott Card (their websites will have book titles and list awards they've won if you feel like going that far)
- the absolute write community - mention how 'over one hundred writers have donated their talents'
- your involvement, how proud you are to be a part of this, etc.
Always try to refer to the anthology by name as opposed to saying "the book" or "the anthology", we want the title "Stories of Strength" in people's minds.
Go get 'em!