I Refuse to Give Up My Rights Just Because I Wasn’t a “Devoted Daughter”

My single sister, 38, cared for our sick mother for 12 years because I was busy raising 4 kids. Mom died, so I want her out of the home to sell and share 50/50. But she said, “You don’t deserve a penny! You were not a devoted daughter!”

I ignored her. But when I arrived to the house, the locks were changed. I could see a shadow from the window, but I froze when I realized the house was almost empty.
I forced myself in and was shocked when I discovered my sister packing the last box of belongings. “What are you doing?” I asked. She just smiled and said, “Oh, didn’t I tell you? I sold the house.”

I was furious and told her she should have consulted me first because the house belonged to both of us. But then she handed me a document—a paper signed by our mother, stating that she would inherit 100% of the property. That’s when I realized the truth: my sister had convinced Mom to give the house entirely to her.

Smirking, she told me she had been waiting to see how I would act after Mom’s death. When she saw that I was so quick to kick her out and sell the property, she decided I didn’t deserve anything.

The house is legally hers, and I have no way to fight it. I feel lost. What should I do?
Cara