Re: schools in Bali. Aside from the time zone issue, residence requirements may or may not apply. We're talking another country.
Parental rights? That's where it really gets interesting. HM and Stella are US citizens in the US now. TS is Stella's father and he also has his parental rights, rights that he didn't have in Bali. I'm not sure how you go about terminating the parental rights of one parent and not the other. Perhaps it's more a custody issue.
I also think that Flavia has legal control over Stella right now. I don't think a judge is going to argue with her if she says she and HM agree that OS will be a suitable caregiver for Stella in the near term - instead of CPS.
Now that Stella is on US soil, I think it might get complicated if OS wants to take Stella back to Bali. I think that would require the guardian ad litem's OK at this point.
HM is still so arrogant, so sure she's cleverer than everyone else. She's blathered on for the last couple years about what she would and wouldn't do when her sentence was up, as though it was all up to her. Instead, she wasn't given the option to leave Stella behind - or to stay herself. I imagine it came as a bit of a shock when she was told - told, not asked - that she would be flying to Chicago, not LA as she had planned. I wonder if the new lawyer in LA is the 'friend' she planned to say with.
I don't think she planned to be met at the airport gate on arrival.