I purposely visited mum last night to get a feel for how she is at night. She was very hyper and unable to stop 'being on the go' -clearly sundowing at a fast pace, no different to how she was at home.
That was a brave thing to do @Palerider, I personally found that extremely difficult to witness. It is strange how it manifests in the same form as generally that was exactly how my Mum was fixated on deceased relatives and going 'home' (to the childhood home). If she can remember older relatives perhaps some photos of them scanned and printed off with the family name may assist in the recognition? It's really difficult to predict what will work, I hope you find something that assists Mum. At least you know there is someone there to comfort her if she does become confused/agitated. All the best.