There are approximately 115 stranger abductions of children, approximately half of which end in murder, which brings the total down to 57 (which is about 1 in 2 Million since there are around 100 million children under 18) . The number of adults abducted is sad to be far less(could not find exact number), so if you narrow it white, female between 18 and 21, yes it starts to increase the odds more. Then, factor in the very small window of opportunity - I think it's more like 1 in 5 billion, but raised the chance to 1 in 500 million to be conservative. Show me some better math and maybe I'll be convinced of some higher odds, but it's certainly no higher than it is for a child stranger abduction/murder and that still puts is as the least likely statistical option.