After seeing the large pack of demons you decide it’s best not to act. You yourself are in no condition to help the poor creature, and knowing full well what comes after demons 'subdue' their prey, you don’t want to stick around either. You glance over and realize the skirmish has already started. It’s too late to really help her anyway, you argue to yourself, plus she’s covered in muscle.
Assuring yourself that she’ll be fine, you take the opportunity to flee while the demons are distracted, heading back to camp. Leaving the ant-girl to her fate.