Dt1 is 2 and very stubborn. She isn't very naughty, but will try and wind her brothers up by grabbing their toys and running off. More generally, her most frustrating behaviour is a complete refusal to do what is asked, eg help tidy up, leave the bathroom after 10 minutes on a potty. (I can't leave her in there on her own, and I can't leave dt2 downstairs on his own for long as both have a thing for climbing stuff they shouldn't).
Yesterday at nursery she bit a member of staff, which is unusual, and refused to say sorry even after iI arrived. Naughty steps don't work, she will happily stay there as long as required, but come out and do the same thing. What alternatives can I try?
I do think this relates to being a twin, her behaviour is completely different when dt2 isn't about, but that's quite rare. They can play well together but are also very comoetitive about things like sitting on me. We try very hard to praise the good behaviour, but ultimately if one hits the other over the head they know that's going to get my attention when cooking dinner faster than sitting quietly!