I looked up Amy's bio and come to the conclusion that the reason Sonic isn't that into her isn't because she's prepubescent (I couldn't find her age tbh) but that's she's an over obsessed fan who is stalking him. From https://sega.fandom.com/wiki/Amy_Rose
Sonic the Hedgehog is Amy's love-interest as she cares very deeply for the blue hedgehog and marvels at all his personal traits. Most often, Amy gets involved in the story while searching for Sonic or trying to find information about his whereabouts. She tends to plunge ahead at first glimpse of his figure, this prompting unusual confrontations as she embraced both Shadow the Hedgehog during the events of Sonic Adventure 2 as well as Silver the Hedgehog in Sonic '06, though the latter was dissolved as part of the storyline.
Post edit: The next dungeon will be on System Shock 2. It has a great soundtrack, it has a great story and not a lot of people have covered it.