Nope, that isn't it either. I'm guessing Fumina asking "where mom was" was just to throw off the girl in the respirator and make it seem like she's doing fine to outsiders and totally not dead.
It does say she "suddenly died in an underground fight." I guess that checks out since she's retired and last chapter mentions she hasn't been seen for a few days. Daughter got over it pretty damn fast though.
First day on the job and Gundou is really showing her phenomenal worth.
When this series is over, we need a spinoff sequel where she becomes a big corporation's intern and rises to become its CEO with all of her terrifying talents.
Seems like Hinata is mostly herself still but now has trouble keeping those repressed desires in check now that Sou's spit has put a crack in her mental fortitude. Gambate, Hinata-chan! Don't lose to your inner succubus!