Hey there,
I just read both of your posts. Kinda long so maybe there were few people with time to fully read . I've got time now, so
Being 13 it's more complicated, for many reasons, but you've come here and took a decision on your own. And that's wonderful. What happened after because of family, past programming and/or pressure from fear or anything it's more or less everybody's problem at such a young age.
I firmly believe that Satan will accept you back if this time you come fully understanding and truly regretting leaving the last time.
Lastly, you don't need to do another dedication ritual as, you've read already, it's a one time deal and what's in your heart matters. I advise you to make a ritual to Father or just talk to him about the situation, asking (and I know it sounds christian-bullshit) for forgiveness and a place beside him.
Have a nice day!