The woman in the photo is Anne Hidalgo, one of the two candidates running to be mayor of Paris. She just tweeted:
Un vrai plaisir de célébrer l'anniversaire de Rafa Nadal, bonne chance à lui!
"A real pleasure celebrating Rafa Nadal's birthday. Good luck to him!"
Not sure this will endear her to the Parisian voting public! Add in the fact that she's of Spanish background (parents Spanish who emigrated to France in the 1960s) and sounds like she's not behaving like wise politicians. Also, given she's over 50, seems like a bit too fan girly.