I'm sorry I have no real advice on this situation, but I wish you the best of luck!

I don't know how my brother was potty-trained, but I know that I was never potty-trained. One day, while I was in the nursery at my daycare, Miss Caroline (my "teacher") just put a new diaper on me and I quickly tore it off and put it on backwards. She proceeded to fix it, and I promptly tore it off again. We went through several rounds of clothing me and unclothing me. She finally decided it wouldn't be so bad if I didn't have a diaper on after all. Mind you, I was only about 1.5 years old, if even, I believe. When my parents arrived at the daycare to pick me up, Miss Caroline informed them that I was having troubles keeping my diaper on. When we got home, they tried putting my diaper back on and I said something alone the lines of "I don't want a diaper!". I had decided for myself that I didn't want to wear those nasty and itchy things any longer. I potty-trained myself. Since I was the queen on the house, they respected my wishes and that was that.

My suggestion is just let her do it on her time. Heck, I wasn't even at the normal potty-training age, and I KNEW I didn't want a diaper any longer. Just like how I knew I didn't want a bottle or a binky.