Any advice on comforting a confused Mom?

My mom has dementia and has been in a NH since summer and has good and bad days in adjusting to this change. Sometimes she is very confused and wants to go home. She was starting to say this last spring when she was in her home, so I know it's really that she's looking for a better place when she wasn't so confused (I also learned that from reading so many helpful posts about a similar topic here). She feels she gets lost in the NH and gets worried she won't find her way "home." Except for word finding issues she is conversational but not assertive. So she'll express these worries to me but not to staff, therefore probably being worried for long periods of time w/o reassuranceo She'll just wheel quietly around and be confused and worried in her mind. She is from England originally (though hasn't been there in about 60 years) and often says she wants to go to her childhood home. When we talk about practical reasons why she can't get there, she understands. But overall in these moments she just looks so sad and confused. When I had to leave her yesterday to go to work I know she was still very confused and I just felt awful. I guess I'm looking for advice in how to respond to help her feel better. I have tried distracting the conversation or activity, asking her to reminisce about what it was like in her old home, but often her mind gets locked on this worry and confusion to the point where she can't enjoy the visits from her family. I appreciate any advice.