Dreams involving relationships with family members can often symbolize deeper feelings or dynamics at play in your waking life. Dreaming of being in a relationship with your stepdaughter might reflect a desire for closeness, connection, or unresolved emotions within your family structure. It could also indicate feelings of protectiveness or a need to support her.

The aspect of her moving away and your feelings of upset could signify a fear of loss or separation in your life, whether it's related to your stepdaughter or to other relationships. It might represent anxiety about changes or transitions that could impact your family.

Consider reflecting on your current relationship with your stepdaughter and other family members. Are there any underlying issues or feelings that need addressing? This dream could be prompting you to explore those connections further.