IMO... I think this Mona was just a neighbor... it would explain why they didn't know her very long. The roommate was the sitter. The video today of the mother has the roommate as well... she said she was at work as well. Home was originally at SD's but at the time they were staying with the roommate/sitter because of problems with SD. Maybe, JF ran home from where they were currently staying at to retrieve the video left at home (home to mom until a few weeks ago). He went to that apartment complex... near where the suspect was at. Geez... I forgot evidence was obtained at the current home. Oh well...