Rachel is what you'd call a controllist.

"I'll have whatever you're having, babe," Santana says, picking up Ari's plastic baby spoon and dancing it across the tray of his high chair to entertain him. She can't help it! She likes making him smile, and he's just squealing in delight, clapping his little hands together. "You like that, hijo?" she asks, grinning herself. "My little fishy. You're gonna be a swimmer, aren't you? Aren't you?" It's not quite baby talk, but it's closer to it than the way Rachel talks to him, like he's a grown adult.