It's hard to tell whether it's something Madoka can actually feel through their bond or if it's something she can just tell by looking at the guy, but it does feel like Maru doesn't have a whole lot of patience for this anymore. And it's not that she doesn't understand - or try to, anyway - but she really doesn't want anyone to get hurt here.

".. I don't think Maru is very happy you took his bag."

It's a little more direct than before, but still not as direct as any other person would be. Because what she means by that is 'I'm pretty sure he's about to hurt you if you don't hand it over.' But this is Madoka trying to be as serious and determined as she can be.

"So please return it to him. I don't want something bad to happen." Unintentionally sounding like the cutest mafia boss.