Try to nip it before school opens. You don't want to bring this anxiety into the school meetings. Try to set up a meeting with the VP explaining both roles. Look at your bylaws and look at job descriptions. Be open and honest and you'll get the respect you deserve. I think the threeforme program is for volunteers.
Good luck.

That sounds like a tough situation. Like a "volunteerzilla"! hehe. (Vol-zilla?)

I'd say something. Think long and hard on how to be very clear but courteous and charming. It sounds like, if you don't, you run the risk of others being so turned off that they might start dropping out (though you're the one who knows the situation personally.)

If you can't defuse her by talking to her, maybe you can circumvent her. Use only the secretary's minutes. Don't tell her your ideas beforehand. Talk to the principal, and let him/her know that you need to be present when setting dates. Pile busy work onto the VP.

This board is a great resource, but you might want to consider looking at other forums as well for organizations that deal with volunteers, not just PTO boards. There are people whose job is to work with volunteers, and they must face this kind of thing all the time. How to deal with over-zealous people without alienating them... sounds universal.

I'm a PTO Prez having problems with a new VP. When we make plans and set dates, she goes to the Principal before I have a chance to talk to her and sets dates with her. When we have meetings, she's the one taking notes instead of letting the Secretary do her job. I talk to her about some of my ideas and she brings them into a meeting as if they were hers. I don't know if she does this on purpose, but it's really bothering me. Should I say something or just be happy she's always wanting to help (with EVERYTHING!)?