Honestly, I was hoping she would drop a steam-roller on her whilst shouting "WRRRRYYYYYY!"
I feel like Yuukey has survived worse so she'll definitely survive this. Hell, we know that they have multiple healers nearby, so she can probably have her wounds "licked" to health.
But seriously, don't let best girl die. I feel like her character arc hasn't completed yet and she's still been building up to something more than "doesn't kill her future sister-in-law."