Haha, hey there!
Your baby hatched tonight, right? Goslings, especially assists, can take a little bit before they get steady legs. She's mostly going to sleep tonight, probably, and won't be much interested in food.
I'd give her 24 hours before you start worrying.
To help her develop proper gait, you want something her feet can get traction on. I find that, for the first 24 hours or so, a towel works best. Just make sure the towel doesn't have any pulls or holes in it that her legs can get hurt on. I'd also let her have paper towel after the first 24 as her flooring until she learns what foodis, if you have a loose substrate that she could accidentally ingest.
Also, I'd make sure she can walk alright before you offer her water dishes unsupervised.