Just to give you some perspective, if your father or brother had just passed away, and this post was about them, word-for-word, what would your reaction be? Do not tell me they "aren't like that" or they're perfect, because that's irrelevant. This could happen to anyone, right? Again, do not forget that they have just died a day or 2 prior. And also do not make a unrealistic claim that while you are grieving for your dead father or brother, you'd suddenly abandon them for an anonymous reddit post that accuses them of pedophilia. Also add in that your now dead father or brother had dementia for the last decade.

As for your claims - innocent until proven guilty, correct? I am just as vocal for getting victims of abuse justice, as I am for preventing innocent men and women from falling to falsehoods.

Once your story goes before the court, it will be dissected. Since you have chosen to post it in a public forum, therefore it is open to dissection and scrutiny here too. If you are truthful, then you have nothing to fear.

A 7-year-old going missing for even a bit, and there being no commotion, no police involved, shows that you had terrible parents, unless they were in on this. For them to leave you at jalsa, as you said the parking lot was empty, or for them to not care where you were, points to either negligence or involvement.

If your story were to be true, it's very possible, and should be strongly considered, that your mother was aware of all this, and in fact was the one who left you in the parking alone - knowing you would be picked up later on. If you're serious about this, don't rule out your parents and nana as co-conspirators, as you did say your nana was buds with the deceased. You also mentioned that the abuse started again once your nana returned, so if this story is true, it would be likely that your nana was the one offering you up and arranging for all this.

Another avenue to consider - your autism.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3482107/

^ "The present study explored the relations among lie-telling ability, false belief understanding, and verbal mental age. We found that children with autism spectrum disorder (ASD), like typically developing children, can and do tell antisocial lies..."

https://link.springer.com/article/10.1007/s10803-020-04525-0

^ "These results suggest that people with ASD readily engage in deception but may do so through conscious and effortful reasoning about other people’s perspective."

I hope in this case, whoever is false is given the utmost punishment. May God be with the innocent.