I know you said your dd isn’t interested in the 3+2 but my ds is one of those students currently so I’ll share his experience. This is his first semester as an EE major at his new school, so far he is doing well. He was a physics major at his SLAC and attended there as a recruited athlete, so he knew he wanted the 3+2 before he started. He received very good merit money which enabled us to save for the cost of the final two years at the engineering school.
Some things to point out - it is a BIG adjustment. He went from a rural campus to a major city school which is a big change. It is definitely much more challenging to make friends with other students when you come in as a junior. He now has classes with 100 other students where he was used to 20 or less. The work at his new school is a lot more challenging but he is holding his own. Academically, he actually enjoys the challenge. Socially, I think he would have been better off going to an engineering school from the beginning but he wanted to play ball and he eventually wanted to attend an Ivy. He also is an introvert so he doesn’t mind staying in and studying. He probably had a much better chance getting into an Ivy going this route as opposed to applying in HS. He had the grades and the SAT scores, but we all know how low the odds are.
Now, the opportunities he experienced at his SLAC and the opportunities he is being exposed to at his new school have been amazing. I think in the long run he made the right decision “for him.”