I think the proportions of hand and fingers are fine.  The palm is about as long as the fingers, which is average.

The female ideal is to have longer fingers, of course, so her hand may look stubby for a glamor girl.  I think it's fine for an ordinary woman.

Would like to see a few more renders of her hand and wrist.  Maybe one of the hand upright and straight, sorta like a Vulcan salute?