[ Staring into the depths of her dessert means she misses the smile. Her cheeks are flushed in embarrassment even though there's really nothing for her to be embarrassed about. He had offered and she's just following up on the request.

And this has nothing to do with her wanting to better herself or brush up her skills. This was for Petra who'd want her to do something like this. ]

I don't usually don't set sparring dates, it's sort of just a matter of principle. [ Finally she glances up. ] Besides I feel like you're much busier than I am. I'm happy to work with your schedule.