OK, so you have other characters to work with.
Now if you go the drama route, it's more then likely going to be a direct scene from the anime. However this expansion can wait as I still don't know what other characters you got working with you.
Comedy route, the most obvious is to play off her love for pizza and the ridiculous extremes she would go about to get it or perhaps a history lesson seeing as she's immortal she can recount historical figures she met in an odd way or how she invented certain ideas.
Depending on your input, I can then branch off from there.
When in doubt, just take the next small step.
With that next step take a deep breath. It calms the mind.
When the mind is calm you realize the best is still yet to come.