Are these two sentences worded in the best way?

FYI- Dahlia is the elf woman. Afterward, Catti-brie was confronted by Dahlia, who had been dominated by Lolth and was now an agent of the dark goddess. While Drizzt and Entreri freed Ambergris from Gauntlgrym’s mines, Dahlia and two jade spiders that served as guardians of the Q'Xorlarrin chapel assailed Catti-brie. Following a vicious fight, Catti-brie slew the spiders with some assistance from the primordial and defeated Dahlia by using magic to collapse part of a nearby tunnel onto the elf woman