It's that last sentence that gets Madoka's worried look to shift between the native and Yondu. A bad feeling, even beyond what they've already seen so far? Madoka isn't too sure what it is, and therefore she also isn't entirely sure what to do.

Hence her slightly hesitant tone when she speaks up.

".. Should I come with you?" She'd rather ask what he's thinking about, but unsure of whether or not he wants to mention it, if he's being so vague in the first place. But if Yondu would rather have her stay here and wait by the stablemate, she'll do just that.