My expert opinion, based on training 9 children, is that potty training takes a long time.
At least for some kids.
Yes, I have had potty prodigies, who got the whole day time and night time dry and clean thing down in a few short weeks.
But Rose is more typical. Yes, she does pretty well during the day. At night, she is still wet. Which is fine.
But even during the day, sometimes life is way too interesting to bother with a bathroom trip and then she gets a little wet as she finally races off to the potty.
This is all fine. An important aspect of being a parent is tons and tons of patience. Really. Patience.
Lots of it.
God given, endless patience.