If Anna didn’t make it out of that subway car, we’ll have to scrape up what remains we can, and salvage enough DNA to be able to clone her. Then, we will also have to train the clone using interpolated brainwave patterns.
The clone should be almost, but not entirely, completely unlike the Anna Harte we all knew and loved.

Or we could just bring over another instance of her from an alternate universe, say, one where one random electron suddenly decided to collapse in on itself, and somehow implode outwards into an inverse positron. Or, maybe one that is a bit more divergent: one where three leaf clovers are considered lucky, or one where the three primary colors are perceived as vermilion, teal, and chartreuse.
That’d work too.

(By the way, it shouldn’t be possible to turn MCM into a zombie, given his current state. At least not from the Solanum virus, anyway. That’d just kill him. I guess you could turn him into a prinny though…)