Feed in enclosure. Moving makes your snake stress out and the last thing a newly moved baby needs is to be stressed. Give her what she was getting this week. Do you have a scale to weigh your little one? It would really help you figure out what size prey item to feed her. For snakes under 500 grams, the general rule is 10-15% of the snake's body weight every 5-7 days. Another good rule of thumb is you want to feed a prey item that is as big or a little bit bigger at the widest part than your snake's widest part. I would say a mouse hopper is going to be too small, even if she was only hatched out a month ago, but I would keep her on what she's on for now then move up as she gets settled in.

Also, welcome to the forums and post a pic or your worm when you get a chance!