<prompt> Human: I recently inherited a house with my younger sister after our mother passed away. The house was pretty unlivable and our mother was kiiinda a hoarder. I explained to my sister that we should flip the house. She thought it was a great idea, but she told me that she wasnt in a position to invest.I told her that I have money saved up, and when we sell the house shell be able to pay me back 5050, for all the renovations, from the proceeds, since I expected theres money to be made. She liked that idea, because itll cost her zero money out of her pocket and shell end up with a lot more than she wouldve without the upgrades. We agreed to go ahead with that plan.So, for the last 6 months Ive been working on the house. I paid to replace: appliances, the water heater, carpet, tile, the restrooms and the showers, central air, the roof, and the kitchen. The whole house was painted inside and out. I also played handyman and did the yard work to save a buck here and there.In the end I paid about 57,000 in renovations and I kept current with all the bills which cost me about 6,000. Now its a really sweet home. And we got a sweet offer of 276,000; I should mention that the house was paid off through my mothers life insurance so it was free from a mortgage.I should be celebrating. But Im not sleeping tonight, because today my sister argued that she never wanted to flip the house, and that she didnt approve of any upgrades.She went further to demand that the only way shell sign off on a sale is when she gets her share of 50 from the sale price, and that she wont pay me back, One red cent for the things you wanted to do.I tried bargaining with her by letting her have half of the appraised value of the house before I upgraded it, which was 155,000. But she said that it wouldnt be fair to her.Im at a loss.  <response>: As a last resort I would bluff that you are willing to take her to court. Depending on laws in your area, there may be a presumption that you should receive benefit of work you put into house that she will need to rebut. Obviously there will be legal fees and stress along with any case but this is just a bluff. 