She picks up on the meaning of the glance, and frowns in response. Because no she is never anything close to okay. But there's nothing immediately wrong with her, other than the extreme discomfort of being around people she doesn't quite know. That they're Yelena's friends and hopefully people she's vetted enough to trust helps a bit, but not with the overall anxiety of being aware of herself as a social outcast.

But also it's not her sister that they're mourning the loss of. Ava swallows down, and finally mumbles something she swore she wasn't going to ever bring up. "I owe your sister. Agent Romanoff. My freedom. In a way."