What does this dream mean and should I proceed with marrying my fiancée?

I have a fiancée and performed about 20-30 istikharah for marriage in a week with proper dua in Arabic before sleep I keep repeating istikharah dua. The Dream occurred around 1.25 am I rarely dream before and hardly remember any. This dream happened at my parents but actually I live in different city because of work. After the dream I felt relieved even though I don’t know the meaning. The Dream:
Somebody knocked the door of my parents at night. I feel something bad behind the door (the feeling was very real). My mom came and opened it without hesitation. I wanted to warned her but it’s too late. That person outside (I can’t see man or woman) take something and run away. I am not sure if the person take something from my mom or just grab something from our house. I started to chase, it was pitch black night and I felt really scared (the feeling was very real). The dream ended, I woke up. Question: What does this dream means? Should I go ahead to marry her?