This girl would have been perfect for ‘So You Think You Can Dance’ or one of those similar dancing oriented TV shows so common now. She even has a dancers name, Valentine Taravel.
I suspect however, that she didn’t really love to dance but had some sort of compulsive behaviour, or something similar, that caused her to behave in this way.
Poor Valentine, ‘for years her parents attached no particular importance to her passion’. Regardless of whether she really did love dancing or it was some sort of behavioural problem, that is a very sad statement.
I wonder what she really died from. Syncope is fainting. I doubt she just fainted to death, and if dancing all night will kill you there are many club attendees that are not going to be turning up for work on Monday morning. Valentine had spent her entire life dancing after all, a few hours waltzing in the attic would only kill her if she mis-stepped and fell down the stairs. Perhaps she just gave up waiting for a partner.