S.G.
I agree, she just might not be ready yet. My son was showing intrest around that age and he still doesn't get it yet and he will be 2yrs old this week. He puts his hand there when he pees and says that he is peeing. He does it in the bath tub too. He also brings me a diaper when he poops. But he just won't sit on the potty long enough to make anything happen yet.
I'd just easy off it for a while and go with her pace. If she want's to try to sit on the potty then let her but I wouldn't hope for much more right now. You say she will go to the potty if she doesn't have anything on below, then you could just let her run around the house like that at least.
Good luck!
~S.
Just for a giggle---One of the Grandma's got my son some Cars Underware for his B-day. Which he doesn't understand the moive but loves cars and anything with wheels. Well I put a pair on him after I washed them and all he could do was push down on the front trying to take it off saying biaper (he says diaper with a "b") momma, biaper!! He wasn't going to be happy till I took that underware off him!!! Oh, well. At least I have a few pairs for later down the road!!