Dreams involving money and exchanges can often symbolize value, relationships, and the balance of give-and-take in your life. In your dream, the teal envelope may represent something meaningful or special, as teal is often associated with healing, tranquility, and communication.

Your sister-in-law giving you money could suggest feelings of support or generosity from family or a desire for a closer connection with her. The first exchange implies a mutual relationship where both parties contribute, highlighting a sense of equality and reciprocity. The second time you accepted money without an exchange might indicate a shift in your perception of this relationship—perhaps you feel more comfortable receiving support or help without the need to give something back immediately.

Overall, this dream may be reflecting your feelings about your relationships with family members, particularly regarding generosity, support, and balance in those connections. It could also suggest a readiness to embrace help or resources that come your way without feeling the need to reciprocate right away. Consider how these themes resonate with your waking life and whether there are areas where you feel comfortable receiving support or giving it.