Is there a chance you could go back in a few months and try again? Or do you have any other schools in your area that might be willing to try?

To have to put her in full-time next year, after such a rough start this year, might work, but it'd be better (I assume) to sort of ease her into it if you have that option. To build her confidence and to provide her with the reassurance that you are not far away and she can have a good time with other kids away from you.