Are these sentences worded properly?

With the magic binding it shut down entirely, the primordial immediately began to shake off the water elementals. Sylora then opened another portal through which she, Dor'crae, Valindra, and most of the Ashmadai left Gauntlgrym. Jarlaxle, Athrogate, and Dahlia were forced to defeat Sylora’s dozen remaining minions in order to escape from the dwarven stronghold, and the trio eventually made their way back to Luskan. Sylora soon captured Dahlia, and under threat of death, commanded the elf warrior to serve as one of her lieutenants in the battle against the Netherese in Neverwinter Wood.