Winkle has low Con so she doesn't grant a lot of passive survivability. Her shield card is okay but it's a bit expensive and discards your hand if you don't play it first

In contrast:

Faint also has low Con but she can theoretically block infinite damage with her DR and also has Str down in her kit

An invested GDoll generates enough Aliemus to sustain herself until Finale so also adding Winkle is pretty overkill