"She was actually blushing. Theo felt he was sending the wrong vibe." No shit, Theo. Maybe don't accidentally flirt with your gargantuan roommate's underage sister.

Roxanne continues to grow increasingly threatening as we learn more about her. I wonder if she skipped a grade or something? She seems young for university. 

Just google BGGB, Theo! Or whatever the google equivalent is in this universe. Although I suppose that might make for a less interesting story.

Also, the more I think about it, the more I feel like Atlasians being huge should be a generally well known thing, even if there are 160+ inhabited planets. It just feels like information people would stumble across at some point.