My mother died before her time and I want to bring her back, please tell me what to do.

My friend is a Luciferian, but he believes in a lot of what JoS says. I have not done my Initiation, and I was wondering if after I do my initiation, I could do rituals with him. I wanted to personalize the rituals I do, but would it be okay if I did rituals with him? We have certain beliefs...