Responses
Spoiler alert!!
It's been so long since the last time I read this, but as far as I can remember they don't know each other. The reason why christelle lose consciousness is because she provoke Jesse's sister and lost I think something only holy Knights can do probably
Ah, is that so.. Then, that means that Jesse's sister is currently stronger than Christelle. On 2nd thought it isn't really surprising as she's revered in both the Kingdom & Empire.
What happened to Christelle? Does she and Jesse's sister know each other?