Name changed for obvious reasons.
I went through something similar to this with an ex-partner who was arrested for a serious crime. The shock and denial to begin with were huge and I did spend a while trying to think up some kind of explanation because no-one wants to admit to it. I thought of him as my family as I'd known him a long time and I didn't know what to do. I ended the relationship straight away but my ex was a master manipulator and a nasty piece of work afterwards - he was threatening suicide, gaslighting etc. I'm ashamed to admit that I did half heartedly go back to him for a short while (only after he'd given me a particularly nasty ultimatum though) but then ended it again. Even after someone told me they thought he was dangerously abusive to me, I told myself they were over reacting.
To cut a long story short, I did manage to get out completely but took a fair while. From my understanding of that article, she married him before he received a conviction so I expect he's told her some sob story about how she was either making it up or she seduced him. People who are capable of this sort of crime are very good at being manipulative so who knows what he's been saying to her. Having said that, I would never in a million years have married my ex after what he'd done!
In a way, I just feel sympathy and pity for her. How bad does her life have to be for her to feel she's not capable or worth being out of this relationship. I did feel sorry for Ched Evans' wife to begin with until I found out she'd been harassing his poor victim - that is completely disgusting and inexcusable and I hope this woman doesn't share the same attitude. As much as I can empathise with their position because I've been through it, I can't imagine how slapped in the face their victims must have felt seeing these men's fiancees stand by them.