Any and all amusement slowly drained from Isabelle's expression as she heard Iron's jab at her height. Her blue eyes locked onto his, and she gave him an intense glare. It didn't contain the same irrational hatred as the look she had made towards the group of punks earlier that day, but he could most definitely see a hint of her cruel side. She didn't want to be offended, as he was clearly just messing with her, but she couldn't lie to herself. It made her feel bad. But rather than dwell on those feelings, Belle turned her head away and huffed out of annoyance. Don't let it get to you, she repeated in her mind.
"Shut up, nerd." It was a shame that she couldn't think of any better insults than that for him, especially given how eccentric he could be. That would have to do for now.
As if one person mocking her wasn't enough, she heard Ayaka chime in from behind, making her grit her teeth as her cat ears folded flat. Her teammates presence wouldn't have been unwelcome, but it was a rude greeting to say the least. All of a sudden, it felt like Isabelle was the one that didn't want to be there. "Oh, hello Ayaka," she said at a louder volume than normal, her tone dripping with sarcasm. The faunus turned to face her other teammate with that unamused expression still on her face. Unfortunately for the other woman, Isabelle took note of the subtle way she moved that bag out of their view, along with her unusual body language; she didn't look as confident or aloof today. 'Odd...' Belle wasn't exceptional when it came to social awareness, but she knew a thing or two about hiding stuff from people. Calling her out on it as a potential way of retaliation had been her plan, but that quickly got sidetracked when her teammate posed a question.
"D... Date?" Isabelle could feel her cheeks flushing red immediately. A quick tug of her arm pulled her hand out of Iron's, and it returned behind her back to clasp with her other hand. Of course they weren't on a date, but she could easily see how it had been interpreted that way. Yeah, she had just about reached the point where she wanted to crawl into a hole and die there. "No, we are not."
She felt a need to get the attention off of her, regardless of how little the other two may have cared. That brought her back to her previous train of thought from before the soul-crushing embarrassment. "... What's in the bag, Ayaka? Did you decide to buy real pants for once?" The girl knew it was a lame insult the moment she said it. She didn't even dislike her pants! They were very nice to look at! But she couldn't let herself be mocked without some sort of response, especially not from these two of all people.