Going back in time a bit to when things between Rune and Gallow started heating up, Fleur and Raya had been locked in their own intense fight against Maria. They were already at a disadvantage, but once she was out on guard by the use of Fleur's charm, her decision to stop holding back found the two girls losing ground even quicker.
While the girls were not exactly weak, their opponents were not the kind you would see yourself up against every day. To make matters worse, Fleur had to be extremely conservative with the use of her charm. She could easily have Maria dancing in the palm of her hand had that not been the case, but using it even once like she already had could risk putting a target on her back. All she could do was try best and assist in any way she could while leaving the majority of their defensive efforts to Raya.