Mara Jade Skywalker vs. Darth Vader

Nothing worse then a Sith for a Father In Law. Particularly when he did annoying things to her back when she was a teenager.

Can she do something about it?

Vader in all three.

She should pose a challenge based on holding her own against Lumiya (granted she hurt herself like an idiot trying to headbutt her), and she wasn't able to break through Lumiya's body either with her saber. Lumiya was able to best ROTJ Luke due to the novelty of her weapon/hold her own briefly against LOTF Luke, and ROTJ Luke was more or less Vader's equal in sabers (granted Vader would've won if he used his force abilities).Vader is also faster, physically stronger, and likely somewhat more skilled.

Good fight though

Mara by a mile. She beat Caedus.

I'm willing to consider her the victor 8/10 conditional on her surroundings, and 5.5/10 in a blank arena.

oNay ampanóZay.