Michelle Obama didn't "decline to wear a veil" when she visited Saudi Arabia. She wasn't asked and dressed as she normally would without a problem. The Saudis are alright with every other female politician who visits doing the same. That's why Laura Bush, Condoleeza Rice, Hillary Clinton, Nancy Pelosi and Angela Merkel all dressed like they normally would when they went there. So what's the problem?
Lebanese women don't have to wear headscarves, by the way. They can dress as they like.
Le Pen clearly sought out this meeting, most likely to create this exact situation for publicity purposes. And yes, it is hypocrisy.
She preys on fear-mongering dummies like you, and you willingly take the bait hook, line and sinker.