She summons two pets: Azo (a spider) and Vahi (a scorpion). If they are taken out, she releases multiple chigoes. The chigoes will remain even if she falls in battle.
If Crawlers' Nest (S) is under attack, she will not be there (if unaligned).
When in the second level of Crawlers' Nest (S), there are several ??? in various rooms. Examine each of these points. If you get the message "There is rotting crawler flesh being eaten by bugs," move to check the other ??? in the area until you see the message, "You find a chigoe with a crimson crest on its back." After you receive the message, return to Choh Moui and talk to her.