Oooh I haven't thought about Prince of Space Flandre... An it works just great with her "pressure point" thingie... I think I've got caugh up in this "she allowed her time to be destroyed by staying in the basement. But maybe she is just "roleplaying"? After all a person may act in many ways...
I mean she wasn’t exactly there of her own volition and staying there is still isolation- By that same logic anyone who’s ever spent time trapped anywhere would be a Bard of Time.