I'm in a similar'ish boat I think. Apple/Google Calendar user.

-I sync the schedule inside the MiCrew app. It auto populates my MiCrew sked into ICal on my Iphone. My schedule then also auto transfers into my Google Cal, which is nice and all. But my wife cannot see it on her Google Cal even though we are all shared/synced both ways with each other. What gives? I can't find any other box to check.