Freaking out

So I've only been away from my daughter for an hour one time since she's been born, other times it's like 10-15 mins to go get coffee or run to the store quick but tonight's new years and my Mil asked to take her for the night. And said okay me and hubby can go out for two hours or something and then go pick her up. But now she wants to pick her up earlier and keep her over night. I'm so nervous and I feel like I'm going to break down and cry alot tonight. So I told her she can come get her at 6pm and then we will take it from there. I feel like it's a really long time for my baby to be away from me. How do momma's do this and go back to work. Or go out with friends. Im lucky I live in Canada and get a year off.

Pfa of my little princess