A look of apologies and excuses will just piss her off
I mean, I feel like that's actually true.
But then again, what else is she supposed to do. If an excuse is out of the question, you can either do nothing about it (which was already awkward) or brag about it (which'd be even worse?).
So at the end of the day, it comes down to "cope about it" for Madoka (or anyone else affected by Ryuu's whims for that matter)...