Dreaming of hiding in your estranged sister's old house can symbolize feelings of unresolved emotions or conflicts within your family dynamics. This dream might reflect a desire to reconnect or process feelings related to your sister or your past experiences with her. The act of hiding could suggest that you are avoiding confrontation or difficult emotions related to your relationship.

Consider what the old house represents to you. It might symbolize memories, nostalgia, or unresolved issues. Reflecting on your relationship with your sister and any recent events that might have triggered these feelings can provide further insights.

If you feel comfortable, think about what you would like to achieve in your relationship with her. This dream could be encouraging you to confront those feelings, whether it's to reach out, forgive, or simply find closure.