I'm not sure specifically what a 'catherine cell' is in this context as the term is rather unclear. It could be a very specific or made - up concept within that particular story.
In the 'the black widow the catherine nevin story', Catherine Nevin was probably a person who had actions or a reputation that earned her the 'black widow' title. This could mean she was involved in activities that were not above board. It could be related to financial misdeeds, or actions that took advantage of people's vulnerabilities. Maybe she was at the center of a scandal or a criminal case where her actions were so notable that she became known as the 'black widow' in this particular story.
Well, 'little lulu miss feeny's folly and other stories' sounds like a collection of stories. Little Lulu is probably a well - known character in these stories. Regarding 'Miss Feeny's Folly', it could be a story where Miss Feeny gets into some sort of trouble or makes a silly mistake. The other stories in the collection might also revolve around the same set of characters or the same fictional world, perhaps with different themes like friendship, family or small - town adventures.
It could be a mysterious stranger she meets by chance. Maybe at a coffee shop, a guy who strikes up a conversation with her and shows an immediate interest in her life. He could be charming and different from Steve, which draws Catherine to him.
In the context of this fanfic, Catherine Rollins and Steve are likely characters created by the fanfic author. They could be original characters, or they might be based on existing characters from a particular show, movie, or book. Without more context, it's hard to say exactly who they are other than two individuals whose relationship is central to the story where Catherine makes Steve cry.
Catherine Mansfield and Catherine Ann Porter were both famous short story writers. Catherine Mansfield's collection of short stories, Honeymoon, was considered one of her most representative works, which included many excellent short stories. Catherine Ann Porter's short story collection, The Complete Collection of Catherine Ann Porter's Short Stories, was also highly regarded and recognized by the Pulitzer Prize for Fictions and the American Book Award. The short stories of these two writers were famous for their delicate strokes and in-depth character portrayals, showing their unique literary value and artistic charm.
I'm not sure which specific 'Catherine' in science fiction you are referring to. There could be many characters named Catherine in various science fiction works.