You ... get used to it. Familiarity, is, as mentioned, the key - narrating the location and why it should be familiar and when they moved there and ways they can prove it's theirs (e.g. keys fitting the front door) tend to help quite a bit. A dissociated mind still wants to believe it should be where it is and that that makes complete sense, it just doesn't have the data available.
Eventually, with luck, you can get them to remember who you are reasonably quickly, and things get a lot less complicated - having the intelligence to call her ex as a substitute was a brilliant move on the author's part.
Eventually, with luck, you can get them to remember who you are reasonably quickly, and things get a lot less complicated - having the intelligence to call her ex as a substitute was a brilliant move on the author's part.