My daughter started going on the potty at 17 months and was fully trained around 20 months.It is possible.However it's alos possible she knows she pooped but still wouldn't have the control.My daughter started going on the potty every night while I was running her bath water,but wasn't completely ready.I just let her decide how ready she was.You are right,you can start pushing for it too early and mess things up!I have a fair amount of experience with this.I worked in daycare for 6 years,have 3 of my own,and have been babysitting in my home the last 5 years.Every child is different so my suggestion to you is to introduce the potty chair but don't push it.Does that make sense?Let her get familiar with it.If she wants to sit on it let her and you can ask her periodically.However if she says NO she doesn't want to drop it.It sounds like she does not like to be poopy and it might not be long before she's trained.However if you start before she's ready your just waisting your time.A child needs to be completely ready to actively potty train.They need to be willing (interested) and able to control it as well.Ex: If she is interested now but has no control of when it comes out and stays in it doesn't do any good.I hope I am making sense,lol.I do however think it's a good idea to let her get familiar with the seat and what you do and let her take everything at her own pace.Also let her watch Mommy and Daddy use the potty.