Since the details are scarce, it's hard to say exactly who Elise is. She could be an ordinary person who just loves cats a great deal and has become known as a great cat mom.
Most BSD light novels often have complex characters. Since they are based on literary figures, they bring in the depth and complexity of those original personas. For example, a character might have the same traits as a famous writer but with a unique twist for the BSD universe.
I'm not sure who Dr Elise Novel specifically is. It could be a doctor named Elise Novel in a particular field, perhaps in medicine, research, or academia. There might be many people with this name, so more context would be needed to give a more precise answer.
The 'F眉r Elise' doesn't have a 'true' story in the traditional sense. It's a beautiful piece of music that emerged from Beethoven's creative mind rather than being based on a factual event or narrative.
The appeal of all BSD novels lies in their ability to create immersive worlds. They draw readers in with their unique concepts and engaging storylines. For instance, the way they handle character relationships is very captivating. The conflicts and reconciliations between characters make for a great read.