Doesn't have to be Facebook/Zoosk's or her fault. Well not completely anyway. Could be another party doing this just to troll, maybe someone who doesn't like her.
Think about it, why would Facebook/Zoosk create a profile of her with her real contact info? It's not uncommon for shady dating sites to use someone's pic and some info to create fake profiles, but they do it for the pretty pics and are gambling that the owner of those pics doesn't find out about it. It would be really stupid to give out the owner's real email address, since would be instantly notifying them that you are committing fraud. Companies that want to stay in business generally avoid that.
On the other hand, third party, doing it either just for lolz or to do something bad to a specific person could easily do it. Facebook pics are out there, so is some basic profile info to make it look more legit, real email isn't hard to get especially if you know the person. I'd say they knew it would put this woman in hot water. Hell, maybe give her husband's email as backup contact.
It's like an hour worth of work to do this to someone who is stupid enough to have their info and pic plastered all over a public web-site like Facebook. That's the part where it's her own fault, though not completely, since there are plenty of other uses for Facebook and this kind of thing doesn't happen to everyone.