Dreams involving suicide can be particularly distressing, and they often reflect deep emotional states or fears rather than literal thoughts of self-harm. In your dream, your girlfriend's action of committing suicide may symbolize feelings of helplessness, anxiety, or fear of losing someone important to you. The phrase "I don’t want to feel like this anymore" might indicate your concern about her emotional well-being or your own feelings of being overwhelmed in a situation.
Your feelings of distress in the dream suggest that you are processing some intense emotions. Staying away from your family in the dream could reflect a desire for solitude while you navigate these feelings or a sense of disconnection from those who are trying to support you.
Consider reflecting on your relationship with your girlfriend and any underlying concerns you may have about her or your relationship. It's also worth exploring your own emotional state and how you cope with stress or anxiety. If these feelings persist, talking to someone you trust or a mental health professional could provide valuable support.