Yep, cutting chain is the best way to go. They’ll start with the bow and stern and section her up into portions a barge/crane can handle.
If its done right they could retrieve sections like the bow and the stern and then just build a new mid section, some years ago I recall a cruise ship that was sliced in half and an “extension” plug was shoved in between.
I just saw an image of it a few minutes ago.
BTW, I read a post over at CruiseCritic that a womans body has just been found.