Just wheat and an empty village, you say...?
For you they are nothing, but for her they are everything.
That's maybe a bit of a stretch, but it certainly not of so little value for her that she could let them go.
Do you want to know why? Read the LN or wait for more chapters before giving your judgement.
Also, that weakness is precious, very much so even if it was not wanted and only an hindrance.
Why, you ask?
Because she is a Hero.