Buying from daughter who doesn't own title? (Father passed away)

[Matthew Burns]

I currently have a deal under contract with a lady in High Point, NC. She has been living in the house for the past few years. The house was originally her father's, but he passed away a few years ago. He passed the house to her and her brother, but she had paid him for his share of the house. Although she "owns" the house, her name is not on the deed. 

Since I'm looking to purchase the property from her, how can I go about buying this place? Does it need to go through probate court? How long would that take?