UPDATE!

Well, I've combined the suggestions and have met with success. First thing in the morning, I give her about 10 minutes to spurt on about whatever is on her mind. During the day, I make excuses about deadlines, smile and walk away. At one point she did trap me and started talking about how she was royalty in past lives (how come everyone in a past life is royalty??!!) and while she went on and on and on about it, I realized how unique and weird ears are and noticed how large her lobes were in comparison to her little head.

So, by shifting the way I react, I was able to make an annoying situation a more palatable interaction.

Thanks for your help.