Jeanny knew their situation wasn't good, but their objective was to keep Abdu's army from disrupting the Dragon Army. At least until the Dragon Army could rout as many soldiers from Verremor's first army so they could afford to divert their attention to guard their back. Hence, they needed to keep Abdu's army occupied for as long as possible.
However, it was easier said than done. The orc army was at a disadvantage due to their initial chaos, but they were not amateurs in warfare that broke apart at the first sign of trouble. With enough time, they could reorganize themselves into the effective fighting machines they were. With a superior number, they were now hitting back.