You should first look at the complete context. Glennis Grace was ASKED BY AGT to perform in their show! They knew exactly what her background was. And her dream is real: Switching from a purely (relatively small) Dutch Audiance to a worldwide platform is her dream.
Im so confused as to why you of all singers has to audition for this show. Im so angry that i missed your 2017 visit to LA. What you need, is better management and PR, because people like me want to see you and didnt know you were even here.