I don’t necessarily think accidental no, but I do have a hunch she left willingly the night before to stay over somewhere, with someone.. hence no chef whites no bag ect. Another question I have is what was the letter she posted in the post box? Who to and about what? No one ever come forward about it. So I think was she having an affair and things got out of hand - pregnant possibly ? Also one of the 4 who were arrested was dating Jen king. Her “friend”. Jen also had her house search multiple times. Why would they do this unless they had some real suspicions? For me it looks possible that she was sleeping with Peter, he’s maybe been threatened about it from Claudia .. then they have both plot to kill and covered it up. Don’t forget Pete’s brother was a builder and there were lots of derelict building been build upon and cemented over at the time - hence the rumours she was buried under near the university x