Tuesday, I think you might have misunderstood me. What I mean to say is I think you are making this way more complicated than it needs to be. You have very good reasons for not wanting your child to be taken to the Hall, and thats fine.
All I am saying is, you don't need to rationalize or justify your position to anyone. Its your child, if you don't want her to go, then she doesn't go. And of course you need to make your position clear to your mother. She doesn't have to understand your concerns, she doesn't have to agree with them, she just has to respect your wishes in this regard. I would also make it very clear that any attempts to flout your rules will seriously impact how much contact she will have in the future with your daughter.
Personally I would have a hard time allowing any kind of extended visits without my being there, between my children and my JW family members. But, since I don't have any kids, I guess its kinda moot.
No Apologies