"That's some very shitty parenting and the one person that you could maybe count on, your sister, is just a crybaby who can't do anything for herself"
Disagree. Parents will eventually die and their money won't be around forever. Listen, life isn't all rainbows and sunny. There'll be thunderstorm too, and sometimes tornadoes. Not everyone can be successful in what they want. When you hear those inspirational quotes by famous people, how many do you think there are versus how many people are in this world. Less than 10% are actually able to live their dreams as their jobs. This is the bitter truth. What's even worse, in my opinion, is parents who always sugarcoat and sweet talk their kids to the point they're becoming deluded.
There's a reason why there are increasing number of easily offended people as well as those who think the world revolves around them and that if something they don't like persist, they'll just scream as if they're victims. Remember, the inhabitants NEED to adapt, not the environment. If she's got talent, great. If not, she better be thinking of anything else. Not saying that can't be her hobby or what, but you have to see realistically as well.