I think you're worrying unnecesarily about things that have not even happened. You are worrying about stuff that doesn't exist... you are worrying about a bunch of "What if's...."
You probalby need to talk to her and ask her how she is going to go about the interview, and if you're going to be given due credit. Then you may decide to act according to her response.
You're not being a jerk about it, but I think you're worrying a wee bit too much about something that's just in your head (as of this moment).
i'm with ankh on this but at the same time i want to applaud your entrepreneurial spirit. you saw something that you were interested in and educated yourself to be better at it. i wonder if you have ever entertained the notion of opening your own shop? if you continue to build your clientele i'm sure they'll follow you.





