I think David meant that they were their cursed personalities for 28 years. Their experiences during that time still matter. Whale is still acting as a doctor even though he’s not Dr Whale any more. Red is still working at the diner even though she’s not Ruby any more.
Lacey I think is going to be very confident and can very much handle herself. When Belle gets her memory back, I think what she’ll get from Lacey is that she’ll realise she doesn’t have to take any crap from anybody, she can do what she wants.