I record bedtime stories for a child who is asleep before my shift ends

Dear Delyara, I work nights in a hotel, and my daughter is six. Every evening before I leave, she chooses a book and places it in my bag. During my break, I sit near the loading dock and record myself reading it so my sister can play the video at bedtime. Tonight’s book was about a rabbit afraid of the dark. Halfway through, a delivery truck reversed behind me and the alarm drowned out my voice. I started again. When I finished, I watched the recording before sending it. I looked exhausted. My uniform collar was crooked. I kept smiling too hard because I wanted my daughter to see a mother who was happy to read, not a woman calculating how many nights of her childhood I have already missed. My sister later sent a photo of her asleep with the phone beside her pillow. Tomorrow morning, I will come home after she leaves for school. We live in the same apartment and miss each other by hours. I keep telling myself I am working for her future. I am afraid her childhood will become the price.