Please listen to us hon, we only want what is best for your snake. And just because your friend has had snakes for 10 years doesn't make her an expert.
I've been cooking for 20 years, does that mean I could run a gourmet restaurant? I don't think so!
Trust us, that snake can eat bigger prey. Do me a favor. Hold out your hand, spread your fingers wide. Take a close look at your pinky finger. Imagine a baby snake the SAME size as your pinky finger. Now, you would think a snake that small would need very small prey, like a pinky mouse. WRONG. He can and does eat hopper mice, which are every bit as big or bigger than the mouse in your photo.
Please trust me, your baby can eat something a lot bigger than you think, and if you don't help him out by giving him the correct food he needs, it might stunt his growth. I myself and the others here only want to help you and your baby.
Since he just ate, wait 5 days then offer him a hopper mouse, or if you can get one, a fuzzy rat. He won't have any trouble getting it down, I promise. Once he's eaten 3 or 4 hoppers or fuzzy rats, move him up to the next size.
I wish you and your baby all the best.
Gale