You gotta get her inspired. Perhaps she hasn’t been exposed to enough inspirational stories? Or she tries something, and get’s a ton of help and it’s hardly her earning it anymore. I was like this as a child myself.
You have to work in small steps.
And like you said in your tag, positive reinforcement. Now in terms of child development. All positive reinforcement means is that they receive something they desire if they do something right (say go to the movies, or you go out for icecream, head to the mall or something) Negative reinforcement means taking away something they desire. (video games, play time, dessert)
It will be difficult to instill, but her mindset is already made up that she can get away with a lot of stuff and help will arrive. Again… small steps at a time. Start it off with helping her. And of course her doing a couple problems on her own. And then doing something fun with her afterwards. She will see how pleased you are and it’ll make her feel good and confident inside.
I highly suggest to throw out all the, “Awww it’s ok poor baby” (im not saying you do this just an example) and instead go with the, “Ok let’s see here how can I help you and what you can earn by doing this homework.” and definitely throw away all harsh tone and aggressive behavior (again not saying you practice this way, just examples)
So let’s pretend she is doing math homework. Build her slowly. Do problems with her. Use visuals she likes in her you language. If she likes bikes, say something like, 8 bikes divided by 2 = 4 bikes. Hell even go with the hand motions. draw a group of bikes, and literally divide them by cutting them in half if the dividend is 2. For me, as a child I was frustrated because I was extremely passionate i wanted to know RIGHT AWAY what the answer was and if I couldn’t get to it, it felt like a let down and I’d just boil and it’s sort of anger and panicking at the same time. or put simply a mild tantrum if you will…. So definitely I feel like she’s a passionate person already, she just needs help in either visualizing it, or getting her intrigued to receive a reward. Let’s face it, we live in a capitalistic society where we have to work for EVERYTHING.
you will be fine, just work in small steps I hope I gave you some ideas to build upon… errr. GOOD LUCK STAY POSITIVE ALWAYS IF YOU GET FRUSTRATED YOURSELF, GO TO ANOTHER ROOM AND VENT THERE AWAY FROM HER! :)