Ugh, I'm right there with you.
My daughter is a little over 3. My mother had me out of nappies when I was a year old and expected me to train her very early, but I had no interest in doing it the old fashioned way. Part of me is now wondering if I should have.
She's quite happy to sit on the toilet (we have a stand-alone potty but she doesn't like it). For months, we've been sitting her on it every two hours. We put a sticker chart up, have been reading books about the potty, even put a jar of marshmallows in the bathroom as a bribe: nothing is working. She is interested enough to say, "Go on the potty, get a marshmallow!" but not interested enough to use it.
Last week she said she had to go potty, so we got her on the toilet quickly and she pooed. We were thrilled, made a big song and dance about it, she got a sticker and a marshmallow and was very proud of herself. So, we let her know we'd be saying goodbye to the nappies, and over the weekend we put her in pants.
We're on Day 3 now of pants, and she still has never peed in the toilet. Yesterday she ran into the house clutching her poo in her hand (which she excitedly threw into the toilet). Today, after sitting on the potty a million times, I let her watch a little TV. Walked into the room and saw wet patches on the carpet underneath her. She was absolutely soaked in urine. The water-proof pillow was soaked on the outside, and there were 2cm deep puddles of pee in the recesses of the leather upholstered chair she was in. She was literally sitting in a pool of her own pee, soaked, and was absolutely unfazed.
If one more person tells me that girls are easier to potty train, I'm going to scream.