I really don't know what to do anymore. She was almost totally toilet trained during the day although still wore a nappy at night.
But now she will wee her pants at home almost every time now and she has started pooing in them and her nappy too.
She has started Playgroup/Nursery and doesn't have any accidents at all there and comes home boasting that she goes all by herself. But as soon as she is at home she completely regresses. I've tried ignoring it and OTT praising when she does get it right, I've tried getting cross and shouting, I've tried extra special attention, especially when her little brother is napping and do one-on -one stuff then, I've tried consequence that she can't get a star/sweetie if she doesn't do it but to no avail.
She always says sorry but just does it again. This morning I was cleaning up one lot when she went and wee-ed on another part of the floor.
Please, please, please help I'm at a loss as to what else to do