>can carry heavy things easily
>the debt collector can't literally take her away since he doesn't have enough strength
I say that kinda proves that she's able to use it anytime.
And since she ain't known as the door and knob destroyer, she must also have some degree of control.
Still stupid that she insist on using sword tho, even tho she's fine with that steel bar when we first saw her.
I mean, other stuff might still leads to her destroying them, like flail's chain broken when she swing it, rock turns to dust before reaching target when she throws it, or even getting a protest from local environmental organization since she uproot trees each time she hits a monster and monster takes lotta hits.
But it's interesting finding out how exactly she gonna screwed each of them.
But I guess it's pointless with our MC stupidly powerful ability.