User blog comment:Vl4dimir-g0thik/Michael Bachelor and Bella Goth Memories/@comment-26407122-20150814223454/@comment-24258073-20150814232740

My theory is that Pollination Technician abducted and forced the Pleasantview Bella into hiding, abducted the Strangetown Bella, dressed her up in Bella's clothes etc. and then put her back in Strangetown to dress everyone into believing that she was the Pleasantview Bella.

Bella Goth wouldn't have had a memory of Cornelia Goth's death because they didn't live in the same house, Bella was already abducted, but more importantly because they did not recognise one another as family.