She's not, but she's being very polie about correcting her instead of telling her to stfu.

That's... good?
But, yeah, it's considered "waving your hands" which as we all know Mediterraneans never do in everyday conversation AT ALL so it's like, bad.

All Sign languages started with French, except maybe Asian ones. But European certainly. People from other countries traveled to France to learn that Sign language and then they'd go home and adapt it to what sings their own deaf people already used. So we're all similar to French but different from each other. :/