I call BS on that neck snap. As awesome it was meant to be, but those Necks can't possibly be that weak. Not even in fiction. "Today, I found another dead kobold in the woods. Yepp, you've guessed it. It tripped and broke its neck."
Also: Surrounded by enemies and she checks if that little girl is still breathing. Is this a world with a turn based strategic battle system and she had some action points to spare?
The story setup is nice. The characters are interesting. Beautiful art style. I want to know where this goes. 85% of this manga are well done, but I'm at a lose for the detail. MC doesn't know the names of her childhood friends. She was a hero in her past live, but makes awful tactical decisions. Lives in her new body for 4 years and secretly trains, but failed to notice, that it can keep up with her old technicise. How did she manage to do the last point? Author, I'm asking you!