Yes you are correct that in the Paul case the court did not pass judgement. It is because as you quoted that allowing a civil suit would have the same effect as prohibiting the act. As it would be a violation to prohibit a religious activity without q compelling governmental interest would be a violation of the constitution.
While yes the case in Paul did not include family. But the case in Anderson did involve family where the court in that case came to the same conclusion and if I remember correctly referenced the Paul case.