^That is totally correct, in regards to Asians and unhooked white girls. I have a good friend. Asian D, 2370 SAT. Class Val. I warned her mom. I suggested in all seriousness that they could greatly improve her chances of getting into HYP, etc…by moving to Alaska. I think they consdered it :-). Their D ended up at one of the top LACs, which was what she really wanted anyway. Just as well, because she was denied from all Ivies and Tufts.
OP, don’t be freaked out by these stories. No idea what kind of student your sister is, what your race is, or your family circumstances, but she will get into college, rest assured. My D is an unhooked white girl and she had lots of choices. Make a good list; that’s the key.