There's no words to change the 'aliens are bad' opinion in her very core, but she does give a second of consideration to what he says and what she's learned so far of this place from that glowy ball.

If this place is for real, the supposed aliens here claim to be up to different bullshit than trying to wipe out the human race. Plus this guy, while annoying and too fast, hasn't actually tried anything just yet. And she does like the idea of aliens being afraid of humans (or humans-ish) here, like many of the Covvies are afraid of the UNSC. Then there's the possibility, no matter how slim, that maybe different species have different motives...

The main selling point that has her again lowering her fists is superficial and downright stupid- he doesn't look like the Covvies. He looks human. Enhanced or mutated or whatever he wants to call it, physically, he looks no different than someone at home. So she gives pause, and yet another hard look at him.

"What the fuck is all of this?" She asks, demands really, roughly gesturing a hand around them. She'll be bothered about mutant-alien-people in a sec, her thoughts are bouncing all over the place.