The group manages to get back to the captive dwarves without much of a problem; perhaps it was even too easy. The dwarves are elated to see that you've returned, but their happiness turns to horror as you lay your fallen comrade on the ground next to the pool.
You tell the dwarves of your plans, to rest for the night and to heal properly, and they do what they can to help, mostly by gathering what little rubble is in the area to barricade the door.
The time passes relatively quietly as the three alternate resting and rituals to regain their lost spells, but sometime during those events it was apparent that there was something outside the barricaded door, thought it is apparently long gone now, as it has been silent for some time now.