Call me crazy, but she might be one of the best isekai waifus ever, design wise. She's got the goods without it being unreasonable for someone this physically active, that stern face and the slightly dark skin. It's simple, but effective.
@herShie_4ever
Knives, especially good quality knives, go through several heat treatments to make sure the blade can remain sharp and duruable. A fire would outright ruin this, potentially making the blade brittle or simply warping the metal so you will never get a straight cut.