[ gamora doesn't waste her time — and she also doesn't lend herself to pipe dreams or false hope. she's realistic, and the fact that she thinks that peter can improve, that he has the ability and propensity to be an even stronger fighter means that she genuinely believes it. she has faith in his capabilities, and while it is a bit satisfying that she'll get to throw quill down in the process, the reason she's insisted is because she thinks he has the potential.

it means that, to her, quill is worth her time.

anything less, and she wouldn't bother. ]

Take as much time as you like. As satisfying as it might be, it's not exactly conducive to your training if I actually break you.

[ a light, throwaway comment not meant to be taken seriously, of course. if she was going to break him, she'd surely had plenty of opportunities before now. ]