Welcome to the community 
Feel free to share some pictures of you little girl .
First off, 2 days off schedule is nothing to worry about at all. You will likely find that out in the future though, ball pythons are notorious for eating only when they feel like it.
Some of the time they will poop in one go, some of the time they will poop half now and another half a few days later (when everything is clean 
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Here is a New owner with non feeding hatchling, troubleshooting 101 guide that is worth reading through for the future.