This is going to sound harsh, but if I would 'stick my ground' and refuse to go. If she's crying because she doesn't know anyone, then tough...they're her 'brothers and sisters', the 'Happiest people on Earth' etc, etc....if she's frightened of her 'own', she's going to be in real trouble under 'persecution'. Nothing to do with 'confidence'...all she needs to do is pray to 'Jehovah' for help, YOU'RE not stopping her attending.
If you attend now, you'll see her smile and confident, THEN you won't be able to stop attending.