Dreams about estranged friends can often symbolize unresolved feelings or past relationships that still linger in your subconscious. The fact that you felt stressed about a major work issue in your dream may indicate that your current anxieties and pressures are manifesting in your relationships and social interactions.

Your estranged friend's request for your opinion on her saree could represent a desire for validation or support, possibly reflecting your own need for reassurance in your life. The act of helping her tie her saree suggests that you are willing to assist others, even those from your past, which may indicate a desire for connection or reconciliation.

Seeing your husband in the dream, despite being single in waking life, could symbolize a longing for companionship or a desire for emotional security. The interaction between your friend and your husband, although nothing happens, may reflect your own insecurities or fears about relationships and trust.

The suggestion for your estranged friend to leave through a back door to avoid gossip might represent a desire to keep certain aspects of your life private or a fear of judgment from others. Your supportive and understanding demeanor in the dream indicates that you have a strong sense of trust and loyalty, both towards your partner and within yourself.

Overall, this dream may be urging you to confront your feelings about past relationships and how they affect your current emotional state. It could also be a reflection of your need for support and validation, as well as the importance of trust in your relationships. Consider what unresolved issues from your past might be influencing your present, and how you can address them to find peace.