Week 5: Obsession

From Introduction to Monomania: "The self will only be convinced of its own worth by the faultless devotion of another." and "Catching the beloved in an act of betrayal affords a...type of mastery"

In The Female Quixote, Arabella acts both of these ideas noted above.  She uses her Romantic novel background to justify a complete and utter devotion by Glansville as the only proof he loves her.  Yet, this show of love must be in a specific way. Namely, Glansville must not say he loves her, but must pine away until he falls deathly ill from keeping declarations of love to himself.  In convincing Glansville to follow her rather hard to understand rules, Arabella receives a confirmation of the superiority of her beliefs, and, therefore, her own correctness in social interaction.
I felt like the second quote fit, but I can't find a specific instance that clarifies why it seems like Arabella becomes a master when Glanville commits some perceived grievance against her.  Is it that she enacts a type of mastery over him here, or is it that the mastery comes from outside either party?  If so, what exactly would that be? Human nature (to disappoint/betray)?

From Mar, Oatley, Djikic, Mullen: "...readers and viewers select entertainment media that will promote or maintain positive moods, or those that will help reduce or circumvent negative moods." and "Anthropomorphisation probably supports the ability to see fictional characters as if they were real, with real human psychologies, perhaps allowing these characters to provide social comfort in ways similar to real peers."

I thought these sentences interesting as they seemed to reflect Arabella's character how our class was talking about her last week.  She used her romance novels to provide support for her arguments with other characters, as well as to confirm her own beliefs (of Ravishers or Robbers or any number of unpleasant situations which could befall her person).  However, we also talked about the fact that she was extremely secluded from normal human interaction.  So, that last quote could help to explain what was going on in her childhood that made these romances so real for her.  She used them as a social comfort.  How does that assumption, then, work with the way her absorption was abruptly disposed of at the end of the novel?