Have you ever seen the book The Kissing Hand? It’s about a kid raccoon being nervous to leave mom to go to school, but the concept works in your situation too. You leave a kiss inside your child’s hand to remind them of you all day when you’re apart. I recommend checking out this book.

Give her one of your shirts after you wear it when you aren’t around. We used to use this sometimes to soothe new children at daycare. Your scent may help to calm her.