Orphan isn’t based on this

“The charges resulted after a five-year investigation revealed that the Indiana couple, who adopted Natalia as a 6-year-old in 2010, had moved her into an apartment in July 2013 — and then moved to Canada with their three other children.” - https://people.com/where-is-natalia-grace-now-8421187

Orphan came out in 2009. So the court ordered aging her up would have been around 2012-13.

The parents stole the idea from the movie Orphan