Dreams like the one you described can reflect complex emotions and scenarios in your waking life. Here are some interpretations to consider:

1. Guilt and Responsibility: The girl who gifted something online may represent a part of yourself that feels guilty for actions or decisions you've made that have unintended consequences. This could suggest you are grappling with feelings of accountability, especially if you feel responsible for how others perceive you or how your actions affect those around you.
2. Fear of Judgment: The online bashing faced by the girl could symbolize your own fears of being criticized or judged by others. It might indicate concerns about your reputation or how your actions are viewed in a social context.
3. Desire to Help: Your role as the cousin trying to help indicates a nurturing aspect of your personality. This may reflect a strong desire to support friends or family members, especially in times of crisis. It could also suggest you are facing a situation where you wish to intervene or provide assistance but feel unsure about how to do so effectively.
4. Conflict and Deception: The police chase and your interaction with the officer may symbolize a feeling of being caught in a chaotic or dangerous situation, where you feel the need to manipulate circumstances to protect yourself or others. The fact that you pretended to be concerned suggests an internal conflict about honesty and authenticity in your interactions.
5. Self-Reflection: The comment from the guy about not asking the right questions might point toward a need for deeper self-reflection or understanding in your own life. It could suggest that there are aspects of your life or relationships that require more insight and genuine inquiry.

Overall, this dream appears to be a rich tapestry of feelings about responsibility, judgment, support, and authenticity. It might be helpful to consider any current situations in your life that resonate with the themes of guilt, judgment, or the desire to assist others. Reflecting on these themes could provide clarity and guide you in addressing any underlying concerns.