Since the other three are also basically down, Isabel makes what is definitely a rude gesture at the retreating fellow. She'd add a bellowed 'bring it', but that'd end the spell from her bracelet, and she's not entirely certain that's a good idea, yet.

So while Isabel doesn't end her song, she waves at Eleven, and then gestures to the disabled trio, with a tilt of her head and an expressive arch of her brows that definitely asks 'so now what do we do with these dorks?'

If they don't look like they actually need a trip to the infirmary, she's perfectly willing to let them go--they've suffered enough humiliation for one day, in her mind.