Eschew of Past Life.
Shed been dreading this moment since the very beginning. No matter how many times kagome tried to justify a different outcome in her head, every path led back to the same terrible conclusion.
Once the jewel was completed, shed have no concrete reason to keep traveling through time, and shed be sent back to the present.
Over the few months the young girl had spent in the past shed shown her share of bravery; holding her own in a world that up until her fifteenth birthday she could only have dreamed about. Shed faced countless demons, and stood up to evil more times than she cared to remember.
But this was far more difficult to face than any enemy shed ever encountered. To leave behind a life that had taught her more than any stupid class in her modern-day school ever could. To leave behind people she had grown to love with all her heart.