As things were, Di Tou had landed two solid hits on the Maw, and also thrown one broom into the Maw's mouth. The first hit of his had cut off a tentacle, which after falling to the ground had lost a lot of its ability to move and struggle, and was on its final moments. The second hit had been across the top of the Maw's 'head' and although it looked like it had caused a decent chunk of damage, just like the various tentacles that had tried blocking his brooms, it had simply sent that portion of the Maw into a constant cycle of growing and disappearing.
Although it was certainly 'damage' it was hard to say just how much of an effect it had. After all, although the Maw was quite limited in size, there was still a whole body on the other side of the Living Realm Fracture. What they were dealing with right now, was quite literally just the mouth of the beast. It was hard to say how it was doing on the other side.