1. let me quote steam before accessing the store page:
The developers describe the content like this:
“This Game may contain content not appropriate for all ages. It contains General Mature Content, and may include Nudity or Sexual Content.”
A child getting murdered does fall under "mature content" I'd say. So there was a warning before you bought the game. Nothing makes for a finer object of hate, than a child killer.
2. It really is super obvious that you can save her. Yes you may roll badly, but if you wanted you could always savescum for a better roll. That whole shtick that its so hard to find the right options is just not believable. Its justification, because you need more arguments except "I dont like it" to make a case for its removal.
3. My guess is there are more people who would return the game for any other reason than this. Even *you* did not return it after all.