Not within a moment's notice, if they don't usually train their arms. I'm pretty sure usually when someone picks it up one-handed, it goes up 75-80% of the way and then you need your other hand to hoist it up fully
It's the royal palace, so I'm assuming they have those heavy furnitures which cost a high price due to their quality. So Cecile is carrying something heavy for sure.
She has insane arm strength though, to be able to.life that chair fully overhead