As others have said before, Viv comes from a wealthy family, and I think that has more to do with her poor behavior than her just being an autistic fujo, though that certainly does make things worse.
She's obviously been enabled her entire life so having multiple people criticizing her, and her work-no matter how reasonable, founded, or constructive that criticism is-, and not giving into her tantrums when she tries to deny any of it is something she just can't handle because it's never happened before.