The sketchy part is not her not getting convicted. It’s that no charges were even filed. I also enjoyed this bit of info from one of the sources regarding the other DUI incident. Prosecutors in Texas have dropped a 2011 drunken driving citation against Wal-Mart Stores Inc. heiress Alice Walton.
Worth mentioning that wealth and class are technically two different things that happen to usually coincide. In the US the connection is nearly 1:1, but in some places like the UK there is quite a history of high class people struggling with wealth and marrying wealthy people in order to combine their wealth/class. I mention this specifically because “caste” is really just another form of class. It’s a form of class tied more to duty/work and less directly to wealth.