I'm not American but it came across to me online that with documentaries like Blackfish being aired on CNN and former SeaWorld workers coming out and revealing their shameful ways that it was a pretty publicized thing in the US so I just figured she would have caught wind of it but I guess not.
I know she wouldn't go if she knew the truth (or at least I hope not) and SeaWorld is completely different to a vegetarian debate because these animals are like 10000x more intelligent than those animals, they're thought to be almost as intelligent as us with their complex social structures and signs of emotion too and they're also the only other animals that can recognise their own reflection in the mirror and they're being abused for entertainment not for food.
Let me buy her a copy of Blackfish and throw it on stage at her when I go to The Elusive Chanteuse Show