Sorry if TMI but she is 2.7yo and I just heard making her particular poo grunt and could have easily whipped off her nappy to see if she'd do it in the loo - but is this going to affect performance? I know I'd be a bit freaked out if I was disturbed mid flow and I don't want to give her any pooing ishoos.
She does seem to be struggling to push them out when standing tho. Or at least, it requires a good bit of effort.