Momo stiffened almost at once when this woman seemed to talk to her about running and calling for help right away and questioning her choice of clothing. I can see why she set Todoroki on edge. For someone who has a lot on his shoulders, he wouldn't take to this well, she thought, now that she was meeting this woman and speaking to her. She could also see why Kirishima probably took her words the wrong way, too. But she wasn't going to let herself get rattled by her remark.
"Momo Yaoyorozu," she introduced, dipping her head in greeting. "I'm pleased to meet you and thank you for the opportunity. I'm sorry I didn't take you up on this offer sooner, by the way." She paused, looking back up to meet the woman's gaze as she stated she was practically bullet proof. "I'm dressed this way so I won't slow you down. My Quirk depends on me having access to my body's lipids. It's not just a fashion choice," Momo remarked softly, but there was a hint of determination in her words.
"I hope to learn from you tonight, Selene. I have some experience, but I also know my own limits well. I don't know what makes you bullet proof, but if you're that concerned, I can make a bullet proof vest as we speak." That, at least, was something that she knew the chemical make up of and could make on a whim.