That's an awesome looking art piece. With this publicity she could sell that for a good chunk of change and kick off a career. Probably going to get a scholarship offer or two out of it as well.
Of course, they're not really trying to protect God, they're trying to protect their own fragile minds, which would have to do a lot of work the moment people are allowed to freely call them out in their bullshit.
I hope this is used responsibly by folks here, but it turns out that you can leave comments on the art piece to encourage Abby. I believe it's screened by her parents first, of course. Here is the link:
https://www.artsonia.com/museum/comments/default.asp?art=123418418
She should have started with something that the school board agreed with. Showing how "intolerant" Islam is, and then creating an easy direct link of those beliefs to Christianity. Make them out to be both fools AND hypocrites while at the same time condemning the cancer of religion as a whole. For bonus points, go from Islam -> Judaism -> Christianity.