There are so many better ways for a student to spend their priceless summer vacation. If you are going to invest what is surely a large sum of money on test prep, do yourself and your child a favor and consider private one on one tutoring. Your child will get individualized attention and will not spend so much wasted time in a class setting, learning the basics along with a lot of other kids. It will almost certainly be less expensive too.
As far your original question, 29 is substantially better than 1250. Just have her prep for the ACT. It’s clear she will have a better score.