If I remember correctly, this is not second thoughts but third or fourth thoughts 😉I'd put her back to Prep provided that would not devastate her. Have you had any discussion with her about it?

Also agree, you could also skip later as needed.

What did the school recommend at the end of last year? Hopefully, they are open to retaining students who would benefit from it.

Don't torture yourself! She doesn't need to be in year 1.

Best of luck...