I find the fact that he called Amanda at all very telling. MB could have had pictures of her in her phone. I think this detail of the case is VERY significant. Either Melissa was his "favorite" or he liked to taunt/ sexually harass young girls. All the GB4 were very small in stature. 4'11" and 5' is tiny! IMO... my best friend is this size and I am 5'8", when we go somewhere I feel like a giant amazon woman. No offense to all you petite ladies. Just making a point that the killer might have been attracted to "little" girls. The sight of a small woman makes him think of teenage girls? Possibly his "perfect" victim are 13-16 yrs. old and he has to resort to prostitutes bc his fear of getting caught is stronger than his impulses? '
All JMO.