My daughter was a strange one to toilet train. She point blank refused to use a potty. I remember her walking around in her nappy, desperate to shite but almost unable to, before unleashing it. Then, when it was filled she hated having the nappy on and wanted changed right away.
My wife and I eventually decided on a plan. She got up one morning and we told here there were no more nappies. We put pants on her, expecting the worst. She held on till about 3pm then went to the toilet (never ever used the potty). After that she only had 2 accidents.
A marked difference to my son who had the usual weaning off nappies and on to potties, followed by a few months of fairly regular accidents, especially at night.