It is a surprise she explains and it does take the tooth out of his pouting right away, so he smiles at her instead. She's not wrong, diplomacy is not exactly the way his charm works, it's definitely distraction. Besides, he knows Claude is very charming, it's one of his favorite things about the man.

Jesper hasn't actively talked about his abilities the same way with everyone, so he takes her question seriously, considering. He wouldn't take a risk with people's lives; with his own life, absolutely, but not others. He follows her.

"The heavier the object, the harder it is. I couldn't tear a tree off its roots easily, but I could move the tree once it's down." It's more likely he would use his abilities to kill the roots or do it surgically rather than rip it off, Durast abilities are always more subtle, and he's become a pretty good one. "And probably mold the tree to the ground so it won't break, but is that big enough?"