the conversation ended in her telling me that God would make me see and humble me down to the point of me never doubting him again to where bad things would happen to me and my family, and also if I died he'll torture me in hell, too.
First all, putting "religion" aside, what she said doesn't make sense logically. If an all powerful God humbles people down to the point of people never doubting him, the world would be full of 'believers' all believing the same thing (and quivering in their boots at the same time). As far as a 'tortureous' hell, check out Christian history... that was made up a few hundred years after Christ walk this earth.
I'm so sorry to hear about your brother.... my condolences. By the way, people from all walks of life, the Good, the Bad, the whatever, lose family members everyday either by accident, illness, or senseless homicide... is that God behind the curtain manipulating little life and death strings?.... I don't think so.
Lastly, it's been my experience that God operates by 'positive' intervention, not 'negative' ones. Humans are very capable of handing everything 'negative' on their own, including your friend's comments.