To be honest, there are aspects of each scenario I like, but getting flat and spreading my weight is the primary concern, so option 2 it is. I would ideally also use my belt to give her something to more easily grasp as in scenario 1, and I would also advise her to swim to the edge of the hole to try breaking away the thin ice where she fell in until she could find a better purchase on the edge, but especially in this case, she is likely panicked and not open to helpful advice.
Once out, since you didn't say we are near the fire, we need to get her to the fire and get her out of the wet clothing. I would use the emergency blanket as a reflector with her between it and the fire to be warmed on both sides. Then, the next priority is hanging the wet clothing to dry.