Stacy might feel a mix of concern, fear, and curiosity when T.J. comes to the Logan house in the middle of the night. The late hour suggests that something unusual or urgent is happening, which could spark worry about T.J.'s safety or the nature of his visit. Additionally, she might feel a sense of protectiveness over her family, as nighttime visits can often bring uncertainty or danger in their context.
A connection that helps illustrate this is the broader context of the relationships in "Roll of Thunder, Hear My Cry." The Logans are a close-knit family who have faced racial and social challenges in their community. Any unexpected visit, especially at night, can be seen as a violation of their home and safety. Stacy's feelings can also be compared to previous events in the book where the characters have faced danger or threats from the outside world. Her instinct to protect her family and sense of unease would likely compound her feelings upon T.J.'s unexpected arrival, highlighting the tensions that arise in their environment and the weight of their experiences.