That's a decent hit. Again, it's possible for frame damage depending on speed and transfer of impact. I would just double check the cost of repair bill for frame straightening and how many hours they put into it. It really depends on the severity of damage.
Ah ok, sorry I missed that. I would triple check on that frame damage claim and validate it (they usually send pictures after tear down). The rear body panel is the re-welding part which is designed to absorb the impact to avoid frame damage. If the frame WAS indeed damaged, that's going a lot...
If you had a reputable shop do the repair, keep it. That rear end is direct swap and re-weld. Plus, if it went through their insurance, you should have lifetime warranty. The hit you will take on selling and buying new is too much of a delta to justify. Just enjoy it.
DV will be a battle...