I'd be inclined to go for the dumpster route myself. Maybe she'd try to take you to small claims court - big deal. Or make it part of the divorce proceedings. Again, bfd. The courts would be supremely uninterested. Just take lots of pictures so you have proof that stuff was damaged. You could always say there was a mold issue...;)

But, if you DO go for the storage route, it also screws her nicely, since it would be difficult for her to get in on the insurance proceedings.

She's been in the fog a long, long time. AND she's going away soon. Not phenomenal material on which to take the risk of your future happiness.

Give her the ol' heave-ho.