So we're on a big expedition into the underground now for the political powers above. Brock was 'encouraged' by his patron to do so for glory and prestige; simultaneously, the drow approached us. They rigged it with a few internal agents so that we'd be exploring their neck of the underground instead of anyone else, so that their cities wouldn't be discovered.
After rescuing a young naga named Lisa and her minotaur mentor Milo, dealing with a number of skeleton t-rexes that turned into smaller t-rexes and their wizard friend, and then fighting off a stray slug of super acid, we're holed up in a drow outpost.
Maya's going to, as mentioned, spring for more functional armor/clothing for Lisa and Milo, and also stock up on more alkali flasks (five, if possible). She's totally not beating herself up for forgetting those delvers were wandering about.