Dreams about kidnappings can often evoke strong emotions, and it sounds like your dream was particularly intense. Here are a few interpretations and insights based on your experience:

1. Fear of Loss or Vulnerability: Your friend being kidnapped may symbolize a fear of losing someone important to you or a sense of vulnerability in your relationships. It could reflect worries about her safety or your inability to protect those you care about.
2. Anxiety and Control: The intense anxiety and dread you felt during the dream might indicate that you're experiencing stress or a lack of control in some area of your life. The act of trying to communicate and locate your friend may mirror your desire to regain control over a situation that feels uncertain.
3. Communication Issues: The fact that the kidnapper was responding to your texts could suggest feelings of frustration regarding communication. You might be feeling unheard or unable to get through to someone in your waking life.
4. Symbolic Meaning of Locations: The abandoned warehouse could represent a sense of lost potential or forgotten aspects of yourself or your relationships. It might also suggest feelings of isolation or abandonment.
5. Processing Fears: Dreams often serve as a way for our minds to process fears and anxieties. This dream may be a manifestation of your subconscious working through these feelings.

To address these feelings, consider reaching out to your friend to check in on her well-being. Additionally, reflecting on any areas of your life causing you stress or anxiety might help you find ways to regain a sense of control and security.