Potty training question: When do they learn to poop in the potty?

I noticed my daughter would always run to a corner to do her business. She was fully peeing in the potty since a week after potty training all on her own, but the pooping was just not happening. Even when I rushed her on the toilet when I saw the signs, she'd hold it in then just go in her panties! It slowly got better where she'd poo in the toilet, but the next time in her pants. It was about 3 months after being fully pee trained that she just all on her own started pooping consistently. We told her we'd go out to eat (as we always eat at home) so she had that to look forward to. As soon as she was going poop in the toilet during the day all the time the night time pull up was taken away. She never had pee accidents at night, but when potty training started she was pooping at night.