Oh yeah they've told her:
Since she said "setbacks" I'm assuming they were people within the industry itself. She's so arrogant and downright deluded she didn't even stop to consider that they might just know what they're talking about. Just brushed it off as being told "crazy things."
Do we think she's still auditioning? I think maybe it's finally set in after six likely exhausting, fruitless years that it's not YouTube that's hindering her, it's not not having the US visa, or all the other things she was telling herself. Surely, she has to finally realize that she's just plain talentless, so bad at acting, no one wants to cast her?