deleted by creator

Mortonksalt linked to instructions.

They say you should be able to put the linked URI into your instance search and pull up the local version of the same post. That isn’t super clean, but it should work.

There isn’t a way to do exactly what you want.

Since you typically do this with your partner, the easiest solution would be for you both to be on the same instance. Then the gray chain link would work fine.

For other random people, use the colored federation star link. That goes to the home instance of the post.

Edit: as per mortonksalt
Another option is to paste the link to another instance into the search on yours. That should bring up the local instance version of the same post.