Advice??

I’m a babysitter or should I say nanny for my 13 month old cousin. I watch her normally 5 days a week from 5am to 5pm. This week however I’ve been pulling overtime and working until 8 or 9. And on Saturday and Sunday. So basically all day everyday lol for the past two weeks while the parents move. She cries for me when I leave and doesn’t care when her mom comes home. Me and this baby are already SUPER close but this is the first weekend I’ve had off and I feel sad and empty..... I miss and love that baby SO much. With my whole heart but I know I have to understand she’s not mine.... Any advice on how to get through this feeling?