Sarah sees the confusion, which only makes her feel more comfortable. This world really is nice.
She wraps her good arm around Gretchen, lifting her like she weighed nothing, and then lifts off slowly, peeking over the building to make sure no in is looking, before really climbing for altitude. Even if anti-mutant prejudice is not big in this world, she sees no reason to draw attention... oh, and holding Gretchen like that is awfully nice too.