Can we get a time line of when it hatched and when you've tried feeding? From what I read she rejected a hopper in the morning, then again at night. Then you tried stressful and invasive act. I would not try feeding that snake again for at least 5 days. Not every snake eats right away. I'd do wait at least few weeks and then try tube feeding first. You can search for a tube feeding video. Tube feeding is much less invasive.