UNC Chapel Hill, passed on the oldest child, how to improve chances for the second?

@Skrunch, don’t let the post scare you. I would think that even if a student were coming from an over represented county such as Wake or Mecklenburg county an ACT score of 33 (which puts a student in the 99th percentile)and a “near perfect GPA” along with some decent ECs should generally have a greater than 90% chance of admission in-state considering that 47% of in-state applicants are accepted. My daughter had an individual sitting score of 28 and a superscore of 30, GPA of 4.8, Top 7% of her class and was admitted this year. Asian female.