Were they even acting in loco parentis? The STAR house ran was a hostel for youngsters. If they did it was only short term. The house operated for less than year so not sure if they adopted the role long term, which is essential to being an actual parent.
Why the need to give the term 'mother' to carers who are not actually raising kids? It just taps into the need for transwomen to claim everything that women have.
BTW
The T in STAR stood for Transvestite a male who dresses as a female but does not believe he is one.