Writing differing views is not a crime. Still, even if what she did was somehow illegal or they had a legimate legal reason to revoke her visa she deserves to be able to face her accuser and not be abducted and denied her life, liberty and property without due process.
Sorry it wasnt clear but that was my attempt at pure sarcasm.
I thought the situation is absolutely nonsensical. Being able to disagree with anyone is part of our social fabric. Once you ban that then wild stuff starts to happen.