DR is texting the phone. At some point, probably around 12n-1p someone at Kilroy's calls or texts DR back and says phone has been at the bar. It hits him that something's really wrong. He calls HT and arranges to pick up the key at her class. He goes to apartment - no Lauren he and two firends (not ht) are involved in filing police report.
So I guess, filling in the story would go something like this:
HT goes to bed that night not knowing where her roommate and friend is even though she knows Lauren was pretty messed-up. HT doesn't see Lauren in her room when she wakes up and so, everything is normal, goes to class.
JR going to the apt is only going to confirm what HT already knows cause that's the apartment she lives in. Unless she slept somewhere else. Which is why I want to know if she has a boyfriend. All these details missing from a story, which the person at the heart of, has been talking lots of JR this and JR that, deflecting details about her role in the night/morning.
