Dreams about warnings or advice can often reflect your subconscious mind processing feelings of vulnerability or caution in your waking life. The woman sitting in the chair may symbolize a figure of authority or wisdom, suggesting that you are seeking guidance or are being reminded to be aware of your surroundings.
The specific warning about not facing the wall with an open window could indicate feelings of insecurity or fear of the unknown. It may suggest that there are aspects of your life where you feel exposed or unprotected, and it's important to stay vigilant and aware of potential threats or challenges.
Consider reflecting on areas in your life where you might feel vulnerable or where you need to be more cautious. This dream could be encouraging you to take steps to protect yourself or to be more aware of your environment and the people in it.