Poor Stella. The authorities, albeit manipulated by HM & team, just kicked the can down the road when she was born & when she was fostered. And Stella is the one who pays the price for that, with no chance a of a normal secure childhood then - or now, especially with bonds having being made, other bonds denied, and it all having been delayed by the kicking of the can for so long that she is aware of it all.
Those decisions were made by Heather Mack. She made the decision to keep the infant in prison with her as it gave her extra privilege and access to money. At no time has Mack made good decisions for the child. If that argument can be presented in a custody hearing, Mack will have reduced control over future decisions for the child.