It sounds as if it's time for a sit around the kitchen table for a meeting with your dc and go completely back to basics!
You call them in for a family meeting where you have paper and pens ready. It would be good if you told your dh beforehand and was present as a united front.
You tell them you will be jointly drawing up a family contract where everybody has their say about what they want, about what they are willing to do and the consequences if they don't.
You write what you think is acceptable behaviour, what help you need around the house and ask them what they think the rewards should be if they are kind and helpful on a day to day basis and what the punishments should be if they aren't.
So your dd writes down what she thinks is acceptable behaviour, what she is going to do to help around the house and what she expects will happen to her if she doesn't, and what rewards there should be if she does.
By involving your dc in this process they will have 'ownership' of the ideas and therefore are more likely to compromise if they know themselves the consequences.
Everything your dc enjoy will be a bargaining chip for you, from the use of electronic devices, tv, treats of every kind, holidays, sleepovers etc. You can say they will be the rewards for kind and helpful behaviour.
So for example, in the early days we'd have a chart where she had to earn 100 'kind and helpful' points for us to go on a shopping trip, etc.
Even if she makes you a cup of tea or is kind to her younger sibling. You should recognise it and praise her and let her know there will be extra rewards if she does kind and helpful things especially without asking.
I use this system as I was finding my feisty 10 yo dd very challenging, we drew up a contract together and both of us signed it. I had to wave it a few times in the early days when she was forgetting it but we perservered and 5 years later she is the kindest, most helpful dd you could wish to meet! (she is also 6 inches taller and much stronger than me now)
It was a lot easier for my other dcs to follow suit with kindness and helpfulness as they saw the eldest as a role model.