I think she is being told he is going to be re arrested to make her feel LE is on her side so she coughs up the beans so to speak. The more she talks and writes letters the more she implicates the both of them. Clearly, she is not doing well with incarceration and LE knows she isn't. The letters suggest that. Her innuendos of the crime being horrific that"he" did are very telling. To me it smacks of knowledge of a crime.