A.S.
Try reading her the book "The Kissing Hand." It is the story of a little raccoon who was sad to go to school and leave his mama. His mama gives him a kiss to hold in his hand to remind him of her love throughout the day. You could try the same kissing hand. My son's first grade teacher read this story to them on the first day of school and send home paper for mom/dad to trace their hand on. At school the kids cut out and decorated the hands to keep in their desks to remind them of their parent's love while at school. Good luck! It will get better!