The lack of consequences. Every day of Amber's life she makes poor decisions. She shamelessly devours enough food for an entire family of 6 every day with no consequences, what she eats is disgusting sodium fat and sugar slathered trash that SHOULD be clogging her arteries, giving her beetus, and shutting her liver down and yet somehow she has yet to die/require hospitilization.
She manages her finances like her food, binging on crap she doesn't need constantly, on top of those massive food expenses. She gets had by every scam artist diet pusher out there (400 bucks of optavia in the trash right) and yet she just keeps making money without doing anything...
It's damn near maddening how she seems to have some kind of plot armor under that fat that allows her to keep fucking up so badly and not be dead or on life support right now. Not only that but for someone with no drive, work experience, education, skills or talent she lives an incredibly comfortable well off life. So while it will hopefully all catch up to her eventually, and she does suffer from a lack of mobility... she doesnt move anyway, and she doesnt care about anyone she leaves behind when she does die, so that's not even a hinderance to her lifestyle.
Amber is like walking proof that actions don't have consequences, so fuck it. TRIGGERED.