Heehee, Traci.
We do not hate people with fines. We hate people that deny that they have overdue books and yell "are you calling me a liar??". Then they go back to the car and a moment later come back in with the book in their hands.
Librarians are the worst regarding returning books. But if we have fines, we pay them. It's just a donation anyway. I do recommend you pay yours, not because I'm a stickler librarian, but because you might get sent to a collection agency. People get REALLY mad when it shows up on their credit report
Now regarding your situation...as others have said, your story is far too common to be hated, and there are much worse out there. The only thing I'd recommend is that next time don't say things like "I'm positive that's the name" because that's what makes great fodder for snarky librarian stories.
She must've said "I'm positive" at least 4 times! You should have seen the look on her face when she realized she was wrong... Yeah, I admit, snarky librarian stories are prevalent at the workplace.
The librarian's dogged determination to find your book is standard procedure. Alex is right, it isn't about books, it's about information, and she was going to figure out what you meant. The chase is what the job is all about.