I didn’t realise that Cheryl was her first name, I thought they’d made a mistake (like how they’ve spelt it Ryker).

But Wikipedia informs me that her full name is Cheryl Gates McFadden and she uses both names:

She is usually credited as Cheryl McFadden when working as a choreographer and Gates McFadden when working as an actress

Shes a famous dancer and choreographer as well, but TNG does play that up.

She was the dance choreographer and in charge of puppet movement for Labyrinth as an example.