There are a couple of unfortunate character portraits of "babes", that don't match the actual character descriptions or behavior. It's the only juvenile aspect to the game, along with some of Morte's quips.
The actual game is neither juvenile nor a power fantasy. It is an anti-power-fantasy. It is about atonement for past misdeeds. Killing is often not the solution, and in fact there is a "pacifist" walkthrough.
Most of the characters you find are mentally and physically scarred by things done to them by [redacted].